recentpopularlog in

pierredv : satellite   490

« earlier   later »
Telesat selects Thales-Maxar team for LEO constellation design work - SpaceNews.com Jul 2018
"Telesat on July 30 selected Thales Alenia Space and Maxar Technologies’ Space Systems Loral division to collaborate on the design of its low Earth orbit broadband satellite constellation."

"Telesat’s schedule for manufacturing and service activation has slipped by about a year. The company now plans to have the constellation in service in 2022, instead of 2021 as originally envisioned."

"Telesat says its LEO constellation will offer multiple terabits of secure throughput with latency low enough to rival fiber. Targeted applications include broadband to aircraft, boats and land vehicles, corporate networks, governments and rural connectivity. "

"Thales is the manufacturer for the 81 LEO satellites in Iridium Next, integrating the spacecraft with Northrop Grumman, and has a study contract with startup LeoSat for its proposed constellation of 84 broadband satellites. Maxar’s MDA division in Canada is a supplier to OneWeb for the company’s 900-satellite constellation. "
SpaceNews  Telesat  space  satellite  broadband  LEO  business  Thales  Maxar 
july 2018 by pierredv
Satellite EOL: Not One Size Fits All - Northern Sky Research Jul 2018
"A satellite launched in the 1990s was designed to operate for an average 12 years, a life expectancy that by the 2000s increased to 15 years. Many continue to operate for 18 years or more, but 15 remains the prevailing design life. Yet with operators seeking new strategies in today’s challenging market, and technology advancing at an ever-faster pace, could the 15-year GEO satellite life be a standard of the past?"

"NSR’s Satellite Manufacturing and Launch Services, 8th Edition, found that commercial GEO communications satellites in-orbit today have an average age of 8.9 years. Only 17.2% of current satellites are in the process of being replenished, indicating that a slate of new orders – or decisions to not replace aging satellites – are coming in the next few years."

"Many elements contribute to a satellite reaching EOL or experiencing a reduction in capabilities, but exhaustion of fuel most commonly drives the 15-year design life. As operators increasingly turn to electric propulsion, this driver will ease, enabling satellites to remain in station-kept orbit longer than with chemical designs. A more near-term solution to lengthen satellite lifetimes is to use in-orbit servicing vehicles, either for refueling or as a tug to provide station keeping."

"Interest in short, 7-8-year lifetimes has also emerged."
NSR  market-research  satellite  business  space  GEO 
july 2018 by pierredv
EO Investment Picture: Worth More Than a Thousand Words - Northern Sky Research Jul 2018
"The Earth Observation (EO) market has been in constant evolution and recently, it has transitioned from costly, large EO satellites to smaller, more nimble ones flying as part of constellations. Using many small satellites is enabling real-time earth monitoring and observation, and with this, increasingly large amounts of data are being produced every day. Additionally, medium resolution imaging (1 m. to 5 m.) is abundant, and its price relatively low and declining."

"This combination of price decrease and data profusion has created a business opportunity favoring the entrance of new players and the application of digital technologies into new business models,"

"Small satellite constellations with new sensor technologies have enabled data and imaging of the Earth in large amounts, thereby allowing for a new set of companies to arise at the intersection of low-priced imagery and digital technologies: data analytics.

And it is not by coincidence that NSR’s research found almost 90% of new space companies dedicated to EO are for data analytics; inexpensive imagery and digital technologies can deliver high value intelligence applications at a much cheaper cost."

"45% of new EO companies were founded in North America and captured 84% of total investments."

"Diving deeper into 2017, and more particularly into the dynamic North American market, NSR’s analysis shows most investor attention was focused on two companies: Orbital Insights and Descartes Labs. "
NSR  satellite  space  EarthObservation  remote-sensing  business  market-research  data-analytics  investing  EO  OrbitalInsights  DescartesLabs 
july 2018 by pierredv
Bridgesat and Nasa Sign Space Act Agreement for Laser Communications - Satellite data collection, bandwidth, ground network services , Mar 2018
"BridgeSat today announced an industry-first agreement with NASA designed to develop a commercialized laser-based free space optical communication system that could support the agency’s future missions as they transition to optical communications. "
BridgeSat  NASA  satellite  Communications 
july 2018 by pierredv
Airlines to Take IFC Controls - Northern Sky Research Jul 2018
"NSR forecasts in its Aeronautical Satcom Markets, 6th Edition that the total satellite connectivity opportunity for IFC will reach $4.7 B in retail revenues annually by 2027 and most of it, roughly $3.8 B, will be generated from commercial passenger markets"

"To ‘share the load’ of IFC, airlines are taking more control over the interface where passengers (and sometimes 3rd party third-party payers in the hybrid model) are increasingly tapped to generate revenues. As service providers look to retreat from the expenses of paying for IFC in order to become more profitable, it is likely that the burden of costs will shift to airlines. "
NSR  satellite  market-research  broadband  IFC  aviation 
july 2018 by pierredv
LandSpace Unveils Highly Ambitious New Rocket - Via Satellite - Jul 2018
"The rocket was defined as China’s first medium-size liquid oxygen-methane launch rocket, and is designed to launch a 4000kg payload into 200km LEO, or a 2000kg payload into 500km Sun-Synchronous Orbit (SSO)."

"LandSpace ZQ-2 will be focusing on high efficiency and high cost performance, which LandSpace sees as the main concerns of the current aerospace market. "
China  satellite  launch  ViaSatellite 
july 2018 by pierredv
Earth observation startup Planet trims workforce by "less than ten percent" - SpaceNews.com Jul 2018
"Planet, the startup that operates the world’s largest constellation of Earth imaging satellites, laid off dozens of workers July 13. One source put the number at 38."

Per Jeff Foust, seem to be "shifting from developing its imaging satellite constellation to creating new commercial products based on the images those satellites provide"

"Planet was founded in 2010 with a small team and a big idea: to deploy an enormous constellation of cubesats to offer daily, global Earth imagery. The San Francisco startup, which grew to employ nearly 500 people, achieved that goal late last year with 200 satellites, including its own cubesats and larger spacecraft it acquired when it took control of BlackBridge’s RapidEye fleet in 2015 and Google’s Terra Bella constellation in 2017."
SpaceNews  space  remote-sensing  satellite  business  EO  EarthObservation 
july 2018 by pierredv
Enabling a GEO-NGEO Hybrid System - Northern Sky Research, Jul 2018
"The Military segment has, historically, primarily been served by GEO satellites for execution of critical applications, including intelligence gathering, navigation and communication. GEO systems, by nature, offer the advantage of significant coverage via a single satellite, especially with the advent of GEO-HTS satellites. On the other hand, latency and significant CAPEX have always been limitations of the GEO architecture. These drawbacks have given rise to the emerging trend of LEO and MEO constellations (NGEO) that can offer low latency and lower cost per satellite. However, constellations have their own set of constraints, with system complexity, ground infrastructure costs and frequency spectrum coordination, to name a few. Considering both, the shortcomings as well as the strengths of each system, could this perhaps be the start of an integration between GEO and LEO/MEO operators with a hybrid GEO-NGEO system on the rise? "

"Keeping the overall system costs low, however, is where it gets complex for NGEO framework. Although the manufacturing and launch costs per satellite are relatively lower, the need for a considerable number of satellites, the associated replenishment costs and the ground infrastructure expenses – all intensify the overall system cost."

"NSR estimates just over 1% of total revenues for gov/military will come from Non-GEO constellations by 2027."

"[TCO] is a key driver for NGEO constellations, military and otherwise, and is as well one of the biggest challenges for the operators presently. Simply put, either the expenses, mostly CAPEX, need to drop or the revenues need to grow for the business case to sustain. This is where a GEO-NGEO Hybrid architecture could prove pragmatic."

"Intelsat’s and OneWeb’s unsuccessful attempt towards a strategic alliance was one example of this hybrid system. GEO operators JSAT and Hispasat have similarly announced strategic investment in LEO constellations including LeoSat."

"Another level of integration, perhaps more technically innovative, and therefore challenging, is a system where GEO satellites can handle the TT&C operations for LEO constellations and act as the base station control system of the network."
NSR  GEO  NGSO  Intelsat  OneWeb  LeoSat  SES  O3b  satellite  constellations  military  DARPA  business  market-research 
july 2018 by pierredv
Kepler to co-develop third satellite with UK’s Satellite Applications Catapult - SpaceNews.com Jul 2018
"Kepler Communications, a Canadian startup designing a network of 140 telecom cubesats, has teamed up with the Satellite Applications Catapult in the U.K. to build a third and final prototype before pressing on with the full constellation."

"Kepler plans to launch the prototype satellite during the summer of 2019, preceding the launch of the larger constellation later that year. "

"TARS will be the first satellite to include a narrowband communications payload to carry small amounts of data from numerous Internet of Things devices"

"Kepler’s Internet of Things focus is on devices that move around frequently and as a result have difficulty staying connected because of differences in cellular standards around the world. Instead of configuring those devices to work with multiple cellular networks, customers can use Kepler’s satellite system to stay connected regardless of location. "
Kepler  Canada  NGSO  business  satellite  IoT 
july 2018 by pierredv
Antenna-makers Produce Multi-band Antennas To Serve Inflight Broadband | Aviation Week Jul 2018
"In June electronically-steered antenna (ESA) developer Phasor announced a partnership with Astronics AeroSat to produce scalable, dual-beam ESA-based aeronautical terminals that will operate seamlessly with existing geostationary (GEO) satellites and under-development non-geosynchronous satellites such as low Earth orbit (LEO) constellations."

“Our ESA aperture has the ability to be single-beam or dual-beam, so you can have a second, independent beam pointing at a different satellite, which gives all kinds of flexibility,” says Helfgott. “You can look at two satellites at the same time or, with the LEOs, you can do a make-before-break where you track a LEO satellite and create a second channel for a different LEO satellite traveling in a different direction.”

"A few days before the Phasor/Astronics announcement, ThinKom Solutions, whose mechanically steered antennas form the basis of Gogo’s 2Ku inflight connectivity service, said its technology is now “fully interoperable” with GEO, LEO and MEO (medium-Earth orbit) satellites."
AviationWeek  Phasor  antennas  satellite  broadband  GEO  LEO  ThinKom 
july 2018 by pierredv
Satellite operators view antennas as weak link in broadband business plans - SpaceNews.com Jul 2018
"As new high-tech satellite antennas start hitting the market, several satellite operators expressed concern that existing and future antennas won’t meet their needs."

"Last year Kymeta, the front-runner in flat panel antennas, started shipping its first units. Phasor anticipates starting production of flat panel antennas late this year or in the first half of next year, CEO David Helfgott told SpaceNews by email July 6. And several other companies intend to follow in 2019.

[Imran Malik, SES Networks vice president for the Asia Pacific] said he is confident that flat panel antennas will help take satellite communications from niche applications to a mainstream means of connectivity. Others didn’t share his view, however. "

"“Flat panels are nice to have, but the main problem is the throughput that you can achieve,” said Ken Loke, Eutelsat Asia’s chief commercial officer.” It’s great for airplanes, great for trains, great for cars also, but the amount of data you can put through it is limited based on the uplink capability. And of course, the price point is probably $1,500 to $2,000 per [unit], the cheapest you can get.”

Loke said Eutelsat is able to provide 70-centimeter antennas systems, including the modem and other components, for around $350. "

"SES in March announced investments into three companies — Viasat, IsoTropic Systems and Alcan Systems — to build flat panel antennas compatible with its next-generation O3b mPower constellation. Malik said SES’s goals for mPower are “to reduce the cost per megabit by tenfold, reduce the cost per terminal by fivefold, and also increase the throughput by at least tenfold.”"
SpaceNews  antennas  satellite  SES 
july 2018 by pierredv
Boeing constellation stalled, SpaceX constellation progressing - SpaceNews.com
"Boeing is not actively building any satellites for the constellation it proposed to U.S. regulators two years ago, an industry executive said June 25.

“We have a filing but we haven’t really started developing it yet, so I would call that not really moving forward,” Dawn Harms, vice president of global sales and marketing at Boeing Satellite Systems International, said at the CASBAA Satellite Industry Forum here. "

"SpaceX anticipates starting service with around 800 satellites in 2020 or 2021. "
SpaceNews  space  LEO  NGSO  satellite  Boeing  SpaceX 
june 2018 by pierredv
Legal Legacies: Milestones In Satellite History - From our Archive - Via Satellite -
Communications Satellite Act
Domestic Satellites - "Open Skies"
Earth Stations
Reduced Orbital Spacing
DBS
The Transponder Sales Decision
Separate (from Intelsat) Systems
Satellite Radio
ViaSatellite  history  satellite  regulations  FCC  Comsat  Echostar  Hughes  Intelsat 
june 2018 by pierredv
July 2018 - Evolutionary Antenna Tech Inspires the Future of Satellite Constellations | Via Satellite June 2018
"Following seven years of development, Phasor’s electronically steered antennas began testing in commercial use cases this year. These antennas are barely 2.5 centimeters thick, and are designed to be conformal in order to look at a wider angle 180 degrees, with dual-beam technology making them LEO and GEO interoperable."

"LeoSat, for example, sees itself as a disruptor in the defense market — which has traditionally relied upon GEO systems."

"By their own admission, Phasor will never be at the bottom of the food chain. And, while the super yachts of the world number in the thousands, fishing boats number in the millions"

"Isotropic Systems aims to be one of the leaders working to connect smaller maritime vessels and flight routes in India, Africa and Latin America. One way to achieve that, they believe, is by reducing the price point of terminal systems by 70 to 90 percent."
satellite  antennas  C-Com  Phasor  LEO  GEO  AvL  LeoSat  ThinKom  aviation  maritime  IsotropicSystems 
june 2018 by pierredv
C-Com, University of Waterloo test hardware for new phased array antenna - SpaceNews.com Jun 2108
"Canadian satellite antenna manufacturer C-Com said June 21 it successfully tested the building blocks of a phased array antenna it hopes to sell next year.... C-Com tested a module 1/25th the size of a phased array antenna that would match the performance of a small 65- to 70-centimeter dish antenna"

"Priced at $10,000, C-Com will be able to reach “a very large number of vertical markets” for constellation operators, Klein said. ... Klein said C-Com hopes to achieve reasonable consumer prices, perhaps below $1,000, through scale over time. "
SpaceNews  satellite  antennas  C-Com 
june 2018 by pierredv
Intelsat's FCC Pipedream - Intelsat SA (NYSE:I) | Seeking Alpha, Paul Litchfield, June 2018
Via Rich Lee

"The Mobile NOW Act, passed in March of last year, instructed the FCC to make available at least 255MHz below the 6GHz frequency by the end of 2020, with a goal of making 500MHz available."

"You can see from these points that the satellite companies really do not have much to offer that is of value to the mobile companies or the FCC and thus their proposal is very unlikely to be accepted."

(p. 5)"SES investors have heeded their CEO's advice and built in only a very small premium for any potential FCC windfalls, in stark contrast to the gargantuan gains racked up by Intelsat."

(p. 5) "However, for the sake of argument, let’s assume that the satellite companies are somehow able to accomplish the herculean task of fixing all these six problems. They offer to vacate at least 300MHz of spectrum, they are able to trample the rights of the FS companies, they convince the FCC to act in a seemingly unfair, legally challengeable manner, they get all the other satellite companies on board and they manage to convince the mobile companies to pay for something that they don’t need (satellite service licenses) for time periods that are too short and for licenses that have already expired. In that case, how does this proposal look compared to the usual ways of vacating spectrum?"
Intelsat  investing  spectrum  5G  satellite  legislation  SeekingAlpha  SES  cellular 
june 2018 by pierredv
US Government and Military Satellite Market, Forecast to 2022, Jan 2017
"The US government is the single largest purchaser of commercial satellite services in the world, and accounted for $1.34 billion in 2015."
satellite  space  forecast  market-research  USG  DoD 
june 2018 by pierredv
IFC Going the Wrong Way? - Northern Sky Research
"... since the seminal contract to Panasonic to install connectivity on Lufthansa’s wide-body airframes in 2010, more than 3,000 commercial aircraft on 40 different airlines have installed Ku-band satellite connectivity. And these have generated roughly $1.7 B in retail revenues since the first year it was online (2012)."
NSR  aviation  IFC  broadband  satellite  business 
june 2018 by pierredv
Consultation: Satellite filings cost recovery - Ofcom
"This consultation document provides our proposed charging approach to recovering the costs of our satellite filings work, and the charges that we propose to apply."
Ofcom  satellite  regulations  fees 
june 2018 by pierredv
Comtech, Kepler to Drive Rapidly Deployable LEO Comms - Via Satellite - June 2018
"Comtech EF Data, a subsidiary within Comtech Telecommunications’ Commercial Solutions segment, and Kepler Communications, a nano-satellite telecommunications company, have announced a collaboration to advance rapidly deployable, low-cost, low-latency communications via Low Earth Orbit (LEO) satellites and ground station infrastructure equipment.

Kepler’s first Ku-band LEO satellite, Kipp, was launched on Jan. 19, enabling data offload services to remote communities and maritime markets. Kipp is the first in a planned constellation of up to 140 LEO satellites that will provide real-time global connectivity by 2022. "
Kepler  Comtech  LEO  satellite  NGSO 
june 2018 by pierredv
How Global Eagle and Telesat Aim to Bridge Mobility Gaps - Via Satellite - June 2018
In mid-May, news surfaced that In-Flight Entertainment and Connectivity (IFEC) provider Global Eagle will facilitate Telesat in designing and testing its Low Earth Orbit (LEO) constellation. This tie-up, which effectively made Global Eagle the first IFEC player to announce a collaboration with Telesat, followed a comprehensive review of planned Non-Geostationary-Orbit (NGSO) constellations.
ViaSatellite  Telesat  GlobalEagle  LEO  NGSO  satellite 
june 2018 by pierredv
U.S. FCC Expands Market Access for SES O3b MEO Constellation | SES June 2018
"SES announced today that it has been granted, by the U.S. Federal Communications Commission (FCC), authorization to serve the U.S. market using a significantly expanded O3b fleet in the Medium Earth Orbit (MEO)."

The FCC grant opens significant additional frequencies to SES for use in its non-geostationary (NGSO) constellation and enables it to deploy O3b mPOWER satellites into inclined and equatorial orbits, delivering full global pole-to-pole coverage. A total of 26 new O3b satellites are authorized, in addition to the 16 satellites already operational and in orbit. The grant allows SES to add 4 satellites to its existing O3b constellation, which are scheduled for launch next year, and provides the framework for SES to triple its next-generation O3b mPOWER fleet by giving U.S. market access for another 22 super-powered satellites, of which 7 are currently under construction and scheduled for launch starting in 2021.
SES  satellite  MEO  O3b  FCC  NGSO 
june 2018 by pierredv
FCC Approves Audacy license for commercial satellite data-relay constellation - SpaceNews.com Jun 2018
"The U.S. Federal Communications Commission granted a spectrum license June 7 to Audacy, the Silicon Valley startup planning to establish a space-based commercial communications relay network."

"Audacy plans to send large satellites into medium Earth orbit and to begin providing services in 2020 for satellite, human spaceflight and launch vehicle operators including data downlink, continuous monitoring and command services"
SpaceNews  FCC  Audacy  NGSO  space  satellite  MEO 
june 2018 by pierredv
In-Orbit Servicing Markets (IoSM) - Northern Sky Research June 2018
With the first commercial servicing spacecraft slated to launch in 2018, NSR’s industry-first In-Orbit Servicing Markets (IoSM) study dives into the market dynamics and challenges shaping this nascent industry and its future potential. IoSM evaluates the value proposition of core IoS applications for different customer types, providing a global market revenue and addressable market demand forecast for each application in the 2017-2027 period. Two case studies on commercial GEO satellite life extension provide insight into the operator perspective in service-or-replace trade-offs, assessing when and why IoS is a compelling option.
NSR  market-research  space  satellite  in-orbit-servicing 
june 2018 by pierredv
Mobile and satellite industries disagree on potential 37–43.5 GHz 5G tuning range | PolicyTracker: the spectrum management newsletter
"These frequencies could all use the same equipment (unlike frequencies at 24.25–29.5 GHz) and they are all are on the WRC-19 agenda for potential identification for IMT in the Radio Regulations."

Summary of View A and View B submitted to IWG-2.
PolicyTracker  mmWave  cellular  satellite  WRC-19  FCC 
may 2018 by pierredv
The Curious Case of the Rogue 'SpaceBee' Satellites - The Atlantic,May 2018
"The SpaceBee is a prototype satellite from Swarm Technologies, a start-up founded in 2016 and based in Los Altos, California. There is little publicly available information about Swarm. According to Mark Harris, the reporter at IEEE Spectrum who first broke the story about the satellites’ unauthorized launch, the company is in stealth mode"

"As of April, there are 589 nanosatellites in orbit—satellites with masses between one kilogram and 10 kilograms (2.2 pounds to 22 pounds), according to a comprehensive database run by Erik Kulu, a spacecraft systems engineer in Glasgow"

"Lockheed Martin is currently building a radar system that would allow the Space Surveillance Network to track smaller objects than is possible now. The program is expected to be finished by the end of this year. "
theAtlantic  satellite  Space  orbital-debris  space-debris  FCC  nanosatellites  cubesats 
may 2018 by pierredv
Russia to create orbital Internet satellite cluster by 2025 - TASS: Science & Space, May 2018
"Russian Space Systems Company (part of the State Space Corporation Roscosmos) plans to implement a project to create a global satellite communications network, which will require 288 satellites operating in the 870 km orbit by 2025"

"We plan [to embrace] 10,000 mobile transport objects, 10,000 outlets of collective access to the Internet, 10 million personal communication subscribers and provide for about a billion transactions a day via secure channels"
Russia  Tass  satellite  constellations  Communications 
may 2018 by pierredv
DARPA asks industry to develop small, secure military satellites to operate in low-Earth orbit (LEO) - Apr 2018
"U.S. military researchers are asking for industry's help in developing a constellation of small, secure, and affordable military satellites that not only are able to operate in low-Earth orbit (LEO), but also that capitalize on modern commercial satellite technologies.... the Blackjack program to develop SWaP-optimized military communications and surveillance satellites designed to operate in LEO."

"The Blackjack program seeks to develop enabling technologies for a global high-speed network backbone in LEO that enables networked, resilient, and persistent military payloads that provide infinite over-the-horizon sensing, signals, and communications capabilities."

"The Blackjack program has three primary objectives:
-1- develop payload and mission-level autonomy software with on-orbit distributed decision processors that can operate autonomously with on-orbit data processing, and perform shared tasks on-orbit;
-2- use advanced commercial manufacturing for military payloads and the spacecraft bus, including high-rate manufacturing using commercial off-the-shelf (COTS)-like parts, reduced screening and acceptance testing for individual spacecraft, and reduced expectations for spacecraft life; and
-2- demonstrating satellite payloads in LEO that operate on par with current GEO systems with the spacecraft at costs of less than $6 million per satellite."

"The goal is to develop a 60-to-200-satellite constellation operating at altitudes of between 310.7 miles and 807.8 miles"
DARPA  LEO  satellite  DoD 
may 2018 by pierredv
Non-GEO Constellations: Surviving the Disruption - Northern Sky Research - May 2018
"The main industry segments most affected by Non-GEO constellations are HTS Communications, IoT and Earth Observation (EO). ... The main industry segments most affected by Non-GEO constellations are HTS Communications, IoT and Earth Observation (EO). Each of these segments presents its own set of challenges and therefore different barriers to success. NSR’s Satellite Constellations: A Critical Assessment report investigates for the first time what guarantees success for LEO constellations within these three segments and the associated disruption on the industry."

"higher revenue requires a higher market share, which further requires low latency and higher coverage. That is the main value proposition of mega-constellations. However, the bigger the constellation, the higher the capital investment needed, and the higher the complexity of manufacturing with (because of their architecture) higher replenishment cost."

"The new Non-GEO constellations are expected to cause the biggest disruption in the HTS segment, conspicuously in Consumer Broadband and Backhaul/Enterprise verticals."

"these new LPWAN IoT constellations, despite offering the highest innovative disruption value, are not likely to have a significant impact on the overall satellite industry - financially, contributing just over 2% of overall NGEO revenues by 2027."

"A combination of low revenues and insufficient market capture will restrain at least one EO constellation from closing its business case."

"New IoT constellations such as Hiber, Astrocast and Kepler have a unique business case based on providing low cost, low power IoT solutions. This market is currently addressed by companies like Sigfox and LoRA on the terrestrial side and – to a limited extent – Iridium, Globalstar and Orbcomm on the satellite side."
NSR  market-research  satellite  space  business  LEO  NGSO  IoT  EO  EarthObservation 
may 2018 by pierredv
BridgeSat Laser Terminals to Connect Iceye’s Microsat Constellation - Via Satellite - May 2018
BridgeSat has announced a set of agreements to provide space laser terminals and data services to Iceye, a commercial microsatellite Synthetic-Aperture Radar (SAR) constellation. BridgeSat’s low-cost terminals and associated ground services give businesses and government agencies an alternative to traditional Radio Frequency (RF) solutions for Low Earth Orbit (LEO) and Geostationary Earth Orbit (GEO) applications.
ViaSatellite  BridgeSat  Iceye  optical  satellite 
may 2018 by pierredv
Iridium breaks Inmarsat monopoly on maritime safety communications - SpaceNews.com
"The UN certified Iridium Communications to provide Global Maritime Distress Safety System (GMDSS) services, ending Inmarsat’s monopoly on the internationally required service for ships"

"The International Convention of the Safety of Life at Sea treaty requires ships of 300 gross tonnage or more have GMDSS equipment onboard for international trips. Inmarsat had been the sole provider of GMDSS equipment since 1999.

Iridium said it expects to begin GMDSS service in 2020."
SpaceNews  Iridium  satellite  space  maritime  GMDSS 
may 2018 by pierredv
SpaceX Falcon 9 rocket launches 10 more Iridium NEXT satellites into orbit - CBS News Mar 2018
"the fifth batch in a $3 billion 81-satellite constellation"

"66 of the 1,896-pound [860 kg] satellites operating in six orbital planes are required to complete the Iridium NEXT network. The company plans to eventually launch 15 in-orbit spares, using SpaceX to put 75 of the 81 planned satellites into orbit at a cost of more than $500 million"

"SpaceX Falcon 9 rocket streaked away from California early Friday, boosting the fifth set of 10 Iridium NEXT relay stations into orbit,"

"The new spacecraft feature a phased-array antenna that can generate 48 beams over a footprint 3,000 miles across"

"Iridium NEXT satellites, designed by the European aerospace giant Thales Alenia Space and built by Orbital ATK in Arizona, feature a different design that will not routinely result in flares"
CBSNews  Iridium  ThalesAlenia  OrbitalATK  launch  SpaceX  antennas  satellite  space 
may 2018 by pierredv
Eutelsat Does the Math on Reducing Future Satellite Costs - SpaceNews.com Dec 2015
"The total capital cost of placing a telecommunications satellite into geostationary orbit is made up of the satellite’s construction, accounting for 50 percent of the total; 30 percent for the launch vehicle; and the rest reserved for insurance charges and diverse expenses."

"[Eutelsat said] it must reduce its satellite costs — construction, launch, insurance and ground segment — to 1 million euros ($1.1 million) per gigabit per second of throughput."
SpaceNews  satellite  space  business  Eutelsat 
may 2018 by pierredv
Internet for the masses not a focus for Kymeta, Phasor - SpaceNews.com May 2018
"Speaking at the Applied Innovation Conference here May 10, representatives from Kymeta and Phasor said their antennas are not currently being designed for consumer-focused satellite internet."

Jeff Foust: "Representatives of Kymeta and Phasor said that, despite interest in consumer satellite broadband services proposed by companies like OneWeb and SpaceX, they're focused on business and government markets instead, which they see as more lucrative. "

"Other companies like London-based Isotropic Systems and Alcan Systems of Darmstadt, Germany, are building electronically steered antennas with consumer broadband in mind, but those will take more time to reach the market. Isotropic and Alcan are both targeting 2019 releases of sub-$1,000 antennas. Kymeta and Phasor antennas, in contrast, have starting costs of tens of thousands of dollars. "

"Brad Grady, a senior analyst at Northern Sky Research, said his firm forecasts 1.8 million electronically steered, flat-panel antennas to be shipped between 2017 and 2027, with low-Earth orbit (LEO) constellations driving 88 percent of demand. ... Of the 1.8 million terminals to ship, 90 percent will be for broadband access and network backhaul, but will only comprise 30 percent of all revenue, according to the firm. Grady said antennas for inflight connectivity are likely to produce the largest chunk of revenues. "

"Hadsall said Kymeta has been producing 70-centimeter Ku-band antennas since production began in October, and has delivered antennas to 23 customers around the world. ... Helfgott likened Phasor’s focus to that of LeoSat, a broadband startup designing a LEO constellation optimized for enterprise and other such deep-pocketed customers. "
Kymeta  Phasor  satellite  antennas  Alcan  IsotropicSystems  NSR  LEO 
may 2018 by pierredv
Spaceflight - Schedule and Pricing
Excerpt
Payload Type 50kg 100kg 150kg 200kg 300kg
PRICE-LEO $1,750 $3,950 $4,950 $5,950 $7,950
PRICE-GTO $4,600 $8,400 $9,800 $11,200 $14,000
satellite  launch  business 
may 2018 by pierredv
How Much Do Satellites Cost? - How Satellites Work | HowStuffWorks
"Launching a single satellite into space can cost anywhere between $10 million and $400 million, depending on the vehicle used."
satellite  business 
may 2018 by pierredv
How Much Does It Cost to Launch a Satellite? Motley Fool June 2016
"ULA says that a "lower-end mission," carrying perhaps 4.75 metric tons aboard one of its Atlas V rockets costs $164 million, while launch costs across its entire fleet average $225 million. (Maximum payload: 8.9 tons.)"
"Ariane 62, designed to launch 5-ton scientific satellites into GTO, is targeting a launch cost of $77 million. Ariane 64, a heavy-lift rocket capable of hoisting two 5-ton satellites into space simultaneously, similar to Boeing's plan, would cost $126 million per launch -- or just $63 million per satellite delivered."
"new and improved Falcon 9 rocket as capable of delivering 5.5 metric tons of cargo to GTO for just $62 million, or up to 8.3 tons for a higher price."
satellite  launch  business  business-model  ULA  Arianespace  SpaceX 
may 2018 by pierredv
NSR: Satellite Manufacturing & Launch Markets Finding a New Normal in $250B Opportunity - Northern Sky Research May 2018
"despite a slow 2017, across the board, the global satellite manufacturing and launch market is poised to generate in excess of $250B in the next decade"

"North America led the market in 2017 and is expected to continue as the global hub of activity, due to both ongoing government demand for high value satellites as well as a robust commercial market. Activity across Asia is closing this gap, however, with China, India, and Japan placing a greater emphasis on competition and capabilities in the space domain. "
NSR  forecasting  trends  satellite  launch  market-analysis  reports  consulting 
may 2018 by pierredv
Satellite and the Arrival of Telecom Pricing? - Northern Sky Research
"The advent of bulk HTS satellite capacity has changed the satcom game. Irreversibly. What started as an alternative to FSS, an innovation with frequency re-use spot beams, has become mainstream and dictated price changes for at least the past 2 years. 60% wholesale price drop across HTS verticals, most prominently for backhaul and consumer broadband, is a telling factor for any industry. The data market is striving to achieve the holy grail of telecom pricing through capacity supply acceleration, led by players like ViaSat, Hughes, SES and upcoming LEOs, among others. Compared to the addition of 600 Gbps in the first 10 years, the above companies will add more than 4.5 Tbps in the next 3 years alone till 2021."

"whether satellite broadband can reach this price point at over a $1B lifetime cost?"

"building a feasible business out of an enormous 1 Tbps satellite needs customers in large volumes – and a price capped at $8-$12 level probably won’t reach current telco pricing that is seen in India."

"CAPEX/Gbps ratios per satellite under $10 from ViaSat-3, Jupiter-3, SES mPower"
NSR  satellite  HTW  business-models 
may 2018 by pierredv
NanoRacks to Launch 15 Cubesats for Nationwide Canadian Project - Via Satellite - April 2018
"April 18 launch of two South African-built nanosatellites onboard a United Launch Alliance (ULA) rocket from Cape Canaveral, Florida. NSight 1, designed and manufactured by Cape Town-based SCS Space, a member of the SCS Aerospace Group, and ZA-Aerosat, designed and manufactured by CubeSpace of the Stellenbosch University, will launch as part of a batch totaling 28 nanosatellites from 23 different countries."

"The satellites are part of the QB50 project funded by the European Union and managed by the von Karman Institute to conduct research in the lower thermosphere between 200km to 380km altitude. "
ViaSatellite  South-Africa  satellite  cubesats 
may 2018 by pierredv
Space Situational Awareness in the Era of Megaconstellations - Mark Dickinson (Inmarsat, SDA) - Via Satellite - May 2018
"The problem is, as we move into the era of nanosat and CubeSats, the barriers to entry are low and many of these operators aren’t fully aware of the regulations and international standards that they need to adhere to."

"the potential for a big data problem, where operators get CA warnings when they are not needed and they don’t understand how to react to data delivered ... As space becomes more congested, with more objects, and likely more CA warnings, it will only become more of an issue"
ViaSatellite  SSA  satellite  Inmarsat  SDA 
may 2018 by pierredv
German startup takes Kymeta-like LCD approach to flat panel antenna manufacturing - SpaceNews.com May 2018
"Backed by fleet operator SES, the German science and technology conglomerate Merck Group and the Beijing Singularity Power Investment Fund, Alcan Systems of Darmstadt, Germany, is nearing completion of a phased array antenna for satellite broadband links. "

"Alcan Systems, whose name stands for “Adaptive Liquid Crystal ANtenna,” is designing modular antennas to bring internet to mobile platforms (cars, planes, boats, and other vehicles), business networks and consumer broadband service — target markets for high-throughput satellites in any orbit. "

"Sibay said the company is aiming for prices “for the enterprise version under 10,000 euros and for the consumer version under 1,000 euros.” Each electronically steered antenna should reach throughputs of 250 Mbps, and have switching speeds between satellites of 5 milliseconds, he said."

"The fundamental difference between the two antennas is that Kymeta’s is based on a metamaterial it describes as “a glass structure similar to a liquid crystal display.” Alcan Systems’ product is a phased array antenna that uses liquid crystals in lieu of traditional semiconductor technology. Kymeta’s antenna is also designed to work with Ku-band satellites, while Alcan Systems is simultaneously creating antennas for Ku- and Ka-band systems. "
SpaceNews  antennas  Germany  satellite  Kymeta  Alcan 
may 2018 by pierredv
Kymeta CEO on the Future of the Mobile Communications Market - Via Satellite - Mar 2017
"Kymeta plans to tackle both the issues of limited coverage and capacity in the mobile space with its long-awaited mTenna product line, which the company intends to release this coming May. Nathan Kundtz, chief executive officer of Kymeta, also told Via Satellite that the company plans to go one step further by partnering with Intelsat to introduce Kalo, a suite of network services supporting the satellite antenna."
ViaSatellite  Kymeta  satellite  antennas  Intelsat 
may 2018 by pierredv
What are the global prospects for unlicensed use of the 6 GHz band? | PolicyTracker - May 2018
"The 6 GHz band is already allocated in the Radio Regulations to mobile on a co-primary basis alongside the fixed and fixed satellite (uplink) services. Advocates of sharing in the band commissioned RKF Engineering to study the impact that unlicensed use could have on the band’s incumbents within the continental US."

"These findings were challenged by the Fixed Wireless Communications Coalition, which was supported by the National Spectrum Management Association. Satellite operators Intelsat and SES also challenged the rigour of the study, in comments that were subsequently described as “tinkering at the margins” by the unlicensed spectrum advocates."

"In response to the EC mandate, a CEPT sub-group (ECC SE45) will complete a similar baseline study by the end of 2018."
PolicyTracker  6GHz  satellite  unlicensed  ECC 
may 2018 by pierredv
Telesat comes out against C-band proposal, girds for spectrum fight - SpaceNews.com May 2018
"Fleet operator Telesat, originally undecided about a joint-use spectrum plan put forward by Intelsat, Intel and SES, is turning against the plan because of how participants would be compensated."

“As it stands, unless we can be persuaded that these proceeds are in fact going to be distributed in an equitable way, we are going to oppose this and will oppose it vigorously,” Goldberg said during a May 3 earnings call.

"Telesat’s biggest growth initiative is the preparation of a constellation of 117 low-Earth orbiting satellites for high-speed global broadband services. The first, a prototype from Surrey Satellite Technology Limited, is in orbit to test technologies and service provision ahead of a larger constellation. Goldberg declined to estimate the total cost of the constellation, ..."

"Even with those resources, Goldberg said Telesat will likely need additional investors or partners to realize the constellation."
SpaceNews  Telesat  satellite  Intelsat  Intel  SES  NGSO  LEO  commerce 
may 2018 by pierredv
Facebook May Have Secret Plans to Build a Satellite-Based Internet - IEEE Spectrum May 2018
"In early 2019, PointView’s Athena will also head out to LEO, on an Arianespace Vega rocket. Athena is about the same size and weight (150 kg) as SpaceX and OneWeb’s satellites, but Athena will use high-frequency millimeter-wave radio signals that promise much faster data rates. The company estimates its E-band system will deliver up to 10 gigabits per second."

"Athena will be built by satellite company SSL, based on its SSL-100 design"
IEEE-Spectrum  Facebook  satellite  E-band  light-licensing 
may 2018 by pierredv
Eutelsat Adopts Anti-Jamming Tech In Upcoming Satellite - Feb 2013
“This function involves embarking new-generation frequency converters behind the satellites Receive antennas,” reads Eutelsat’s press release. “This will put Eutelsat in the unique position to be able to change the frequency of an uplink signal without any impact on the downlink frequency received by user terminals, marking a major breakthrough in the bid for continuity of service for broadcast signals jammed by rogue uplink signals.”
satellite  interference  jamming  broadcasting 
may 2018 by pierredv
Satellite Constellations: A Critical Assessment - Northern Sky Research Apr 2018
From the email, "LEO-HTS Constellations Present Great Promise but Challenging Business Cases"

From graphic, studied following constellations:
LeoSat
Telesat
SES mPower (aka O3b)
OneWeb
SpaceX

"NSR predicts two, out of the five Non-GEO HTS constellations analyzed, do not have a viable business case and will not be sustainable, if launched. The remaining three will generate 12% of overall satcom market revenues over the next decade. Costly systems and replenishment cycles, matched against funding challenges, demand questions, and extraordinary technical and regulatory complexity, will separate contenders from pretenders in the high stakes constellations market."

"The associated CAPEX, including replenishment costs, is one the biggest hurdles to HTS, EO, and IoT constellation business plans"

"Vertical integration trends – such as in-house manufacturing and, in the case of SpaceX, incorporating that with its own launch services - aimed at lowering costs further actually add another layer of complexity that is greatly underestimated. Supply chain management is a momentous challenge, ..."

"There is a compelling level of optimism towards Non-GEO constellations, ... However, financial success for LEO constellations depends on their ability to bring pricing down to a level competitive with terrestrial networks and make the services affordable to target markets"
satellite  constellations  LEO  HTS  research  NSR  reports  consulting  market-analysis  market-research  business 
may 2018 by pierredv
US Lawmakers Want DOD to Use More Smallsats, Reusable Rockets - Via Satellite - Apr 2018
"Concerned that large, high-value satellites are vulnerable to growing threats from potential enemies, the U.S. House Armed Services Committee (HASC) wants the Department of Defense (DOD) to consider making greater use of smaller spacecraft. The committee’s newly unveiled fiscal year 2019 defense authorization bill would require DOD to study the benefits and risks of using small- and medium-size buses for certain new satellites, including those providing protected communications and missile warning."

"Another space provision in the bill would require DOD to study the feasibility of using reusable launch vehicles to save money."

"To improve space management, the bill would create a U.S. Space Command within U.S. Strategic Command to promote joint space warfighting; set up a numbered Air Force for space warfighting; reorganize the existing 14th Air Force to focus on space support; and direct DOD to develop a plan for a new acquisition system for space."
ViaSatellite  DoD  satellite  defense 
april 2018 by pierredv
May 2018 - AI Heads to Space with a Constellation of Use Cases | Via Satellite Apr 2018
"Though the technology is just starting to roll out, Artificial Intelligence is applicable to many aspects of the satellite ecosystem, including system manufacturing, in-orbit management and image processing. From optimizing satellite builds on the factory floor to accurately determining the GDP of an entire nation, automated, scalable algorithms offer the space ecosystem rich potential for both an operational sea-change and a whole new set of applications."

"It’s important to note that AI may represent enormous possibilities for process improvement, but its deployment is not without challenges. One of the main issues on the manufacturing front is the intense amount of customization that’s required. No two satellites are identical, despite attempts to standardize products and systems."

In orbit: "... SES, whose fleet of 70 satellites each generates continuous health and status data. The operator is working with IBM Watson to use a real-time streaming AI to look at that data lake and increase reaction time to correct and normalize satellite operations when fluctuations in the telemetry occur."

"AI however opens up a new chapter in EO by lending scale, automated image tagging and sorting, and map correlations — which, taken together, can be used for entirely new applications, such as understanding the economic state of a third-world nation."
ViaSatellite  AI  space  satellite 
april 2018 by pierredv
Lower Barriers to Entry in the Satcom Market, and What that Means for the Incumbents - Via Satellite - Apr 2018
"industry is undergoing a period of rapid change, including an erosion of the high barriers to entry that satcom has seen historically."

1) Massive increase in possible throughput on a satellite, without a massive increase in cost ... While Global IP’s satellite price is not known publicly, it would be in the low hundreds of millions of dollars

2) An increase in variety of funding sources ... easy financing for Chinese-built satellites

3) General decrease in costs

China is expected to continue to push satellites as broadband infrastructure along the Belt and Road Initiative countries
ViaSatellite  satellite  commerce  business  satcom 
april 2018 by pierredv
Gwynne Shotwell: SpaceX's plan to fly you across the globe in 30 minutes | TED Talk
"It'll cost the company about 10 billion dollars or more to deploy this system"
SpaceX  Starlink  LEO  satellite  broadband 
april 2018 by pierredv
LEO constellation rush not a threat to Iridium, CEO says - SpaceNews.com Apr 2018
"Large constellations of satellites planned for low Earth orbit (LEO) present little threat to Iridium’s business despite sharing the same orbit, CEO Matt Desch said April 26."

"Both Iridium’s legacy satellite constellation and its upgraded Iridium Next fleet that is mid-deployment operate using L-band frequencies. L-band is smaller swath of spectrum that can’t offer the same high throughputs as higher frequency spectrum like Ku- and Ka-band, but is known for its robust signal strength, often making it the frequency of choice for safety communications. Most large LEO constellations that have gained significant attention, including SpaceX, OneWeb, Telesat, LeoSat and Kepler Communications, are designing satellites in Ku and/or Ka-band."

"Iridium reported a 14-percent increase in revenue growth for the first three months of 2018 as compared to the same period last year. Money generated from Iridium subscribers, which numbered 996,000 as of March 31 and make up 75 percent of the company’s total revenue base, grew 10 percent."

"Desch said the majority of network traffic going through Iridium is now on the company’s Next satellites, of which 50 out of 66 are currently in orbit. "

"Iridium has since 2014 sought approval from the United Nations’ International Maritime Organization (IMO) to break competitor Inmarsat’s sole hold on emergency maritime communications."
SpaceNews  Iridium  LEO  investing  finance  satellite  L-band  Inmarsat  maritime 
april 2018 by pierredv
EDF Announces Satellite Mission to Locate and Measure Methane Emissions | Environmental Defense Fund Apr 2018
"Environmental Defense Fund President Fred Krupp today announced plans to develop and launch a new satellite purpose-built to identify and measure methane emissions from human-made sources worldwide, starting with the oil and gas industry. Data from MethaneSAT is intended to give both countries and companies robust data to spot problem areas, identify savings opportunities, and measure their progress over time."
EDF  space  satellite  remote-sensing  climate 
april 2018 by pierredv
New Export Controls on Satellites Bring New Compliance Challenges By Brandt Pasco - SatMagazine Jun 2014
"on November 10, 2014, when most commercial satellites move off the Munitions List to Commerce"

"For years, the European space industry has been working overtime to go “ITAR Free,” eliminating to the maximum degree all U.S.-origin items which are subject to the International Traffic in Arms Regulations."

"Life under the strictures of the ITAR has not been kind to the U.S. space industry, and everyone understandably hopes to revive the glory days before Congress slammed space into the U.S. Munitions List in 1998. By some estimates, 80 percent of space related items are moving off the ITAR."

"This shift to the Department of Commerce licensing jurisdiction means a highly visible change in licensing, especially for parts and components but also for most commercial satellites. The use of license exemption Strategic Trade Authorization will allow many license free exports to 36 countries. "

"some of the more burdensome ITAR licensing restrictions and compliance requirements are merely being transferred to the Department of Commerce regulations"
satellite  export-controls  ITAR  DoC 
april 2018 by pierredv
47 CFR 25.261 - Sharing among NGSO FSS space stations. | US Law | LII / Legal Information Institute
Absent coordination between two or more satellite systems, whenever the increase in system noise temperature of an earth station receiver, or a space station receiver for a satellite with on-board processing, of either system, ΔT/T, exceeds 6 percent due to interference from emissions originating in the other system in a commonly authorized frequency band, such frequency band will be divided among the affected satellite networks in accordance with the following procedure
FCC  satellite  interference  coordination  NGSO  regulations 
april 2018 by pierredv
Glasgow leads Britain's satellite space race - Sky News, Apr 2018
"Satellites once took 10 to 15 years to design and produce but newer nano-versions can be easily built in days or weeks."

"The former shipbuilding hub has re-invented itself for the space age. It now makes more satellites than any other city outside the United States.

Scotland's first satellite, built by Clyde Space, was launched just four years ago. Since then Alba Orbital and Spire Global have joined the space race, between them putting around 100 satellites in orbit."
UK  Scotland  space  manufacturing  satellite  Spire 
april 2018 by pierredv
Globalstar Unveils New Satellite Hotspot for Enterprise Markets - Via Satellite - April 2018
Globalstar is bringing a new product, the Sat-Fi2, to the United States and Canada, which it hopes will prove a hit to enterprises across the region. Particularly, the company is targeting a wide range of consumer, enterprise and government markets including oil and gas, marine, alternative energy, government, emergency management, forestry, construction, commercial hunting and fishing, transportation and logistics — and for anyone who needs to stay connected when working or traveling off the grid.

The Sat-Fi2 is a lightweight, portable satellite hotspot providing communications through any Wi-Fi enabled smart device. Sat-Fi2 provides connectivity powered by Globalstar’s satellite network and represents the first product using the company’s next generation ground infrastructure.
ViaSatellite  Globalstar  products  satellite 
april 2018 by pierredv
Satellite Internet and information about how it works
Helpful details about VSAT services, beam coverages, antenna pointing, how it works, discussion and help forum.
satellite  broadband  VSAT  calculator  * 
april 2018 by pierredv
Satellite geolocation - Wikipedia
Satellite geolocation is the process of locating the origin of a signal appearing on a satellite communication channel. Typically, this process is used to mitigate interference on communication satellites. Usually, these interference signals are caused by human error or equipment failure, but can also be caused by deliberate jamming. Identifying the geographical location of an interfering signal informs the mitigation activity.
Wikipedia  geolocation  satellite  interference  TDOA  FDOA 
april 2018 by pierredv
Backed by Government, Telesat to Initiate First Customer LEO Trials This Year - Via Satellite - Apr 2018
"Telesat launched its LEO Phase 1 satellite in January ... Since then, the company has completed orbit raising and is in the midst of testing the satellite’s payload, including demonstrating satellite tracking and Doppler compensation, low latency network performance, and tracking antenna validation, Hudson said. If all continues as smoothly as it has, Telesat will kick off its first demonstrations with customers in the second half of 2018, according to Hudson."

"As for launch options, the matter is somewhat complicated, as Telesat’s constellation will occupy multiple orbital planes at different altitudes and different inclinations. However, Hudson did say Telesat will likely select a heavy launch vehicle for its primary deployments."
ViaSatellite  Telesat  deployment  satellite  LEO  launch 
april 2018 by pierredv
RF Interference Mitigation | Kratos Technology & Training Solutions
"Kratos has the most comprehensive RF interference (RFI) mitigation products on the market to support day-to-day operations for satellite operators and bandwidth resellers so they can provide the best quality of service possible.

Kratos industry-leading carrier monitoring product family includes Monics®Net, Monics®Enterprise for advanced enterprise level carrier monitoring, the most accurate geo-location product, satID®, SigX™, which automatically cancels CW and sweeping CW interference and SatGuard to combat VSAT interference."
satellite  interference  RFI  mitigation 
april 2018 by pierredv
[pdf] EPFD Verification Software Status and Perspective - slides 2016
Transfinite, Agenium, IRU-R
from ITU Workshop on the Non-GSO Satellite Issues, 21st April 2016
ITU-R  Transfinite  Agenium  satellite  epfd  interference  NGSO 
april 2018 by pierredv
Equivalent power-flux density limits validation in accordance with Resolution 85 (WRC-03)
Resolution 85 (WRC-03) requires the Bureau to verify compliance of frequency assignments of non-geostationary fixed satellite service  systems with the single-entry equivalent-power flux density (EPFD) limits in Tables 22-1A, 22-1B, 22-1C, 22-1D, 22-1E, 22 2 and 22-3 of Article 22 of the Radio Regulations and to determine the coordination requirements under Nos. 9.7A and 9.7B.

In order to perform this regulatory examination, the Bureau in collaboration with two software companies developed a validation software package to calculate EPFD levels produced by non-GSO satellite systems.
epfd  calculation  software  satellite  interference  NGSO 
april 2018 by pierredv
[15]  Limits on equivalent power-flux density (EPFD)
Document : ITU-R WRS16 Contribution 15
Title : Limits on equivalent power-flux density (EPFD)
Date :2016-11-01
Source :Space Services Department
ITU-R  epfd  satellite  interference 
april 2018 by pierredv
« earlier      later »
per page:    204080120160

Copy this bookmark:





to read