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pierredv : ka-band   9

FCC grants Telesat LEO market access despite ViaSat protests - SpaceNews.com
"Following market approval given to OneWeb in June, the U.S. Federal Communications Commission on Nov. 3 granted global fleet operator Telesat permission to reach the U.S. with a constellation of 117 low-Earth orbit satellites.
Competitor and partner ViaSat of Carlsbad, California, which operates geostationary satellites and is awaiting FCC approval for a medium-Earth orbit system, had urged the FCC to deny Telesat’s filing, but was largely rebuffed."

"The FCC also granted Space Norway market access Nov. 3 to reach the U.S. with two satellites in non-geostationary elliptical orbits. Both Telesat and ViaSat sought to block Space Norway."

"Telesat plans to select a manufacturer for its constellation next year, and start launching in 2020, leading up to activation in 2021. The full constellation will support broadband communications with several terabits of total capacity."

"The FCC did include conditions on Telesat, such as a need to clarify space debris mitigation as the constellation progresses. . . . OneWeb and Spire both took up space situational awareness issues about Telesat LEO with the FCC. "
SpaceNews  Telesat  ViaSat  OneWeb  Ka-band  satellite  FCC  SpaceNorway  space-debris  Spire 
november 2017 by pierredv
Sharing and Compatibility Study between Fixed Service Using High Altitude Platform Stations (HAPS) and Other Services in the 31/28 GHz Bands | SpringerLink
Abstract
In the World Radiocommunication Conference 2000 (WRC-2000), use of the 31 GHzand 28 GHz bands was permitted for the fixed service (FS) by using highaltitude platform stations (HAPS) in some countries. This paper examines thesharing and compatibility of the HAPS-based FS with the other services usingthe same and adjacent frequency bands and establishes the conditions of thecoexistence with those services. Feasibility of dynamic channel assignment(DCA) scheme among the different communication systems to facilitate thecoexistence is also studied.
HAPS  FS  Ka-band 
september 2017 by pierredv
FCC Denies EchoStar Request for Co-primary Geostationary Orbit Ka-band Designation | TvTechnology
"The FCC's International Bureau last week denied a Petition for Rulemaking filed by EchoStar Satellite Corporation requesting the commission modify its Ka-band plan to permit geostationary satellite orbit (GSO) fixed satellite service (FSS) operations on a co-primary basis in the 18.8-19.3 GHz and 28.6-29.1 GHz bands designated for non-geostationary satellite orbit (NGSO) FSS. EchoStar's petition received support from SES AMERICOM, Hughes Electronics Corporation, and Hughes Network Systems, which supported EchoStar's assertion that the spectrum is lying fallow and co-primary use could lead to the introduction of additional and innovative services."
TVTechnology  EchoStar  satellite  rulemaking  FCC  GSO  NGSO  Ka-band 
august 2017 by pierredv
From Boeing to SpaceX: 11 companies looking to shake up the satellite space | FierceWireless
"Companies filed with the FCC last year to launch 8,731 non-geostationary orbit (NGSO) communications satellites, according to Parabolic Arc. Not all of them are proposing to connect the unconnected to the internet; some are geared toward IoT and others are looking at serving the space industry. Performance is expected to be far better than previous satellite generations, with fiberlike speeds and lower latency."
FierceWireless  satellite  NGSO  FCC  OneWeb  SpaceX  ViaSat  SpaceNorway  LeoSat  Karousel  Audacy  Theia  Boeing  O3b  Ku-band  Ka-band  V-band  Kepler  Telesat  * 
august 2017 by pierredv
ViaSat Joins DeSIRE II Remotely Piloted Aircraft Systems Project Consortium | ViaSat
As part of the consortium, ViaSat is taking the lead in developing the communication, navigation and sensing (CNS) technologies for real-time RPAS command and control across Ka- and L-band satellites. ViaSat will provide an advanced satellite communications (satcom) system that includes modems for both frequency bands and modems for system gateways to demonstrate how a satcom system can lead to the safe use of RPAS in "unsegregated" or civilian airspace.
ViaSat  press-release  satellite  drone  ESA  Ka-band  L-band 
august 2017 by pierredv
New Dual-band Ku/Ka Terminal Enables In-flight Network Switching Across Commercial Ku- and Ka-band Satellite Networks | ViaSat
"In-flight network switching between commercial Ku- and Ka-band satellites has been successfully demonstrated by ViaSat Inc. (NASDAQ: VSAT), using its innovative dual-band terminal and a new radome. The test flights, conducted in July and August on a commercial 757-200 aircraft, demonstrated the state of the art in broadband enroute communications with the aircraft transitioning among multiple satellite beams from six satellites and three Ku- and Ka-band networks."

"Over the past year, ViaSat Exede® in-flight internet has enabled broadband satcom communications on 200 commercial aircraft operating over the ViaSat high-capacity Ka-band satellite network in North America. "
satellite  Ka-band  Ku-band  broadband  aviation  ViaSat  in-flight  press-release 
august 2017 by pierredv
Living Room Connectivity at 24,000 ft | Things With Wings, Aviation Week Jul 2017
"Inmarsat’s Ka-band broadband service, called GX Aviation, and Honeywell’s receiving equipment (the antenna and associated electronics), known as JetWave. "

"Inmarsat’s I-5 satellites, which provide the backbone for GX, have a theoretical maximum of 50 Mbps for each Ka-band receiver that hooks up. "

"On the crown of the aircraft is the Ka-band steerable antenna (see picture below - looking down from above, without the dome), which rotates 0-90 degrees around one axis and 360 degrees around the other, making it be able to point anywhere in the hemisphere above the aircraft. Mounted below the antenna and also under the dome are two receivers (allowing Honeywell to track two I-5 spot beams simultaneously in areas where the beams overlap, always staying connected) and a power amplifier with up-converter and down-converter. "
HTS  satellite  broadband  Inmarsat  Ka-band  AviationWeek 
july 2017 by pierredv
Inmarsat’s Ka-Band Satcom Paradigm Shift | EBACE 2017 content from Aviation Week, May 2017
"Inmarsat’s Jet ConneX Ka-band satcom service is soaring, with this week’s announcements by Bombardier, Dassault and Embraer about equipping their aircraft with the high-speed satcom systems. Suddenly, L-Band and Ku-band hardware seem passé. Jet ConneX typically provides 15 Mbps download speeds for business aircraft, with others providing a mere 6 Mbps or even just 1."

"Inmarsat has three fifth-generation I-5 satcom satellites parked over Atlantic, Indian and Pacific Ocean regions. Each provide 89 spot beams, providing global satcom coverage up to 82-deg. latitude. A fourth, recently launched I-5 is being positioned to boost capacity even further. Inmarsat plans to launch two additional Ka-band-capable satellites in the early 2020s to add even more capability."
AviationWeek  Inmarsat  HTS  satellite  aviation  broadband  Ka-band 
may 2017 by pierredv

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