recentpopularlog in

pierredv : defense   13

The Woomera Manual | The Woomera Manual
"The Woomera Manual project is an international research project that is spearheaded by The University of Adelaide, The University of Exeter, the University Of Nebraska and the University of New South Wales - Canberra. Our mission is to develop a Manual that objectively articulates and clarifies existing international law applicable to military space operations."
space  law  military  defense 
february 2019 by pierredv
What happens when a Royal Navy warship sees a NATO task force headed straight for it? A crash course in Morse • The Register, Jan 2019
Surely, in this day and age, I asked Cdr Harper, there's no need for such antiquated communication methods? The CO enthusiastically replied, referring to the Morse code signalling routine: "It's secure because it's line-of-sight only; we can encrypt it; it's very difficult to eavesdrop on it unless you're inside line-of-sight; it's a valuable naval skill."

He had a point. I got the distinct impression that the Royal Navy values Morse code highly as a matter of professional pride.
defense  maritime  communication  security 
january 2019 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
March 2018 - LEO/MEO Satellites Poised to Make a Mark in Military Sector | Via Satellite
"Satellites in LEO and MEO soon will be here to stay thanks to companies like LeoSat, OneWeb, and SES-owned O3b. The question is whether they also can go beyond meeting the needs of commercial and consumer users to also serving the needs of a dispersed, increasingly mobile military. Via Satellite talks to leading LEO and MEO industry figures to see how they envision their constellations supporting military missions globally in a fast-evolving threat environment."

"The United States Defense Information Systems Agency’s (DISA) recent Request for Information (RFI) calling for a low-latency satellite connectivity solution underscores the government’s openness for considering new non-Geosynchronous Earth Orbit (GEO) solutions. And that cooperative posture also has been illustrated during the Air Force’s wideband Analysis of Alternatives (AoA) exercise to define the future space architecture, where several LEO and MEO companies put forth their recommendations."

"LeoSat is on schedule to launch two demonstration satellites in the second half of 2019. Launch of the production satellites will begin in late 2020 and the constellation should be complete by 2022." LeoSat's Abad: “We are not looking to bring broadband down to every single person in the world. We want to provide carrier-grade telecommunications services via space.”

"Both LeoSat and OneWeb have received high-profile funding — SKY Perfect JSAT became an anchor investor in LeoSat in May, while OneWeb received $1 billion from Japan’s SoftBank last December, making it a 20 percent equity owner. OneWeb also has partnered with Airbus on its new high-volume production facility in Exploration Park, Florida."

“What needs to change is the ground infrastructure — you can’t build a LEO constellation realistically with two parabolic antennas and expect to reach the scale and volume that these providers talk about,” says Brad Grady, senior analyst in Northern Sky Research’s (NSR)

"NSR estimates that the defense sector will require about 14 gigabits per second of non-GEO HTS capacity demand by 2025, representing an 18 percent annual growth rate from 2015."

“Everyone has figured out that the critical point in launching these new constellations is the antenna system. You can’t have a successful non-GEO network without a very agile, very capable antenna technology,” says David Helfgott, CEO of Phasor, one of a handful of antenna technology providers who will plan to offer Commercial-Off-the-Shelf (COTS) antenna solutions for these up-and-coming constellations in the next 12 to 36 months.
ViaSatellite  LEO  MEO  ElectronicallySteerableAntenna  Phasor  satellite  defense  DoD  SES  NSR  LeoSat  OneWeb  venturecapital  VC  investing  antennas 
march 2018 by pierredv
Senior military official: Space secrets becoming harder to keep -
Vice Chairman of the Joint Chiefs of Staff Air Force Gen. Paul Selva:

“Space is really an open architecture,” he said. “If you have enough hobbyists with telescopes, you can detect all the satellites in low-Earth orbit. If you know where all those hobbyists are and you can precisely map their GPS coordinates — and you can map the time they saw the object you’re actually interested in — you can develop a reasonable detection and targeting system.”

This means the nation’s space assets can be detected even without “elegant radar and telescopes,” said Selva. “Russia and China possess both elegant radar systems and elegant space detection systems and they are able to subscribe to all of those other capabilities that already exist.”

Anyone with a late-model iPad can download the Spacewalk open source “upstream community” app and watch what happens in space, Selva noted. “Go out to your back yard the next time the International Space Station flies over, hold your iPad up to the station, and see how close the track is,” he said. “It’s nearly perfect.”

Spacewalk also catalogs all of the known satellites in low-Earth orbit. “You can watch them fly by with the naked eye, sometimes with binoculars,” Selva said. “The basic existence of that data gives potential competitors knowledge of the space enterprise that all they have to do is add more high-fidelity sensors to it and they get a really good picture of what’s up there.”
SpaceNews  space  surveillance  defense 
january 2018 by pierredv
Space industry hit hard by military spending downturn - Jan 2018
"The defense spending downturn that started in 2010 was tough on the space sector, according to a new study by the Center for Strategic and International Studies. Pentagon contracts for space systems dropped from nearly $10 billion in 2009 to just over $6 billion in 2016. Especially steep were cutbacks in space research and development contracts — from $6 billion to about $3 billion."

"CSIS analysts pointed out that much of the Pentagon’s spending on space activities shifted from actual products — like rockets and satellites — to launch services."

"Most of the military space work, about 70 percent, goes to the industry’s top five firms: Lockheed Martin, Boeing, Northrop Grumman, Raytheon and General Dynamics"
Defense  space  CSIS  SpaceNews 
january 2018 by pierredv
Pentagon space posture: Don’t even try to mess with us -, Jan 2018
In space, the United States has to become so strong to make it obvious to adversaries that they would have “no benefit to be gained” from attacking U.S. systems, Mattis said.

"Mattis’ explanation for how to make space more resilient echoes the thinking of other military leaders who have called for the Pentagon to stop using large, expensive spacecraft and instead put up constellations of cheaper small satellites that can be replaced quickly if a conflict erupted and U.S. systems came under attack."

Preferably, said Mattis, conflicts in space should be resolved diplomatically. “We’ll come up with arms control agreements at some point, and we’ll start getting this under control.”

One of the central themes is that the United States faces formidable military competitors like China and Russia. “Our competitive edge in every domain of warfare — air, land, sea, space, and cyberspace — is eroding,” Mattis said in the speech.

The reality is that a strategy that is written without regard for resource constraints is just a “bunch of words on a page,” [defense budget analyst Todd Harrison, CSIS] said.
SpaceNews  space  defense  DoD  resilience  arms-control 
january 2018 by pierredv
Orbital ATK Is Under White House Pressure for Foreign Purchase of Propellant - WSJ
Per Jeff Foust email: "Orbital ATK is enmeshed in a dispute with government officials about foreign purchases of solid propellant. The company purchased several thousand tons of ammonium perchlorate from a French company at a lower price than the sole U.S. provider, American Pacific, to see if it is suitable for use in missiles and launch vehicles. That move has been criticized by some White House officials, who believe it damages the overall defense industrial base. American Pacific argues it needs multiyear purchase guarantees to operate efficiently, and has the support of Scott Pace, executive secretary of the National Space Council. Orbital ATK, meanwhile, is studying developing its own ammonium perchlorate plant for long-term savings. [Wall Street Journal]"
WSJ  space  OrbitalATK  commerce  defense 
january 2018 by pierredv
New report slams idea of a missile defense shield in space - Dec 2017
Per Jeff Foust email: "The Center for Strategic and International Studies (CSIS) included space-based missile defense in a new report titled "Bad Ideas in National Security." Such systems made it into the report "because of their inefficiency and vulnerability," one CSIS expert said. Congress has asked the Pentagon to investigate space-based missile defense through a provision in the 2018 defense authorization act."

"Congress is asking the Pentagon to investigate the possibility. The National Defense Authorization Act for Fiscal Year 2018 authorizes the development of a “space-based ballistic missile intercept layer, capable of providing boost-phase defense.” Don’t do it, warns a new report by the Center for Strategic and International Studies. The think tank included space-based missile interceptors as part of its series titled “Bad Ideas in National Security.”"
SpaceNews  space  defense  CSIS 
january 2018 by pierredv
The Tragedy of the American Military - The Atlantic
"The American public and its political leadership will do anything for the military except take it seriously. The result is a chickenhawk nation in which careless spending and strategic folly combine to lure America into endless wars it can’t win." "The most biting satirical novel to come from the Iraq-Afghanistan era, Billy Lynn’s Long Halftime Walk, by Ben Fountain, is a takedown of our empty modern “thank you for your service” rituals." "Chickenhawk Nation, based on the derisive term for those eager to go to war, as long as someone else is going" "A chickenhawk nation is more likely to keep going to war, and to keep losing, than one that wrestles with long-term questions of effectiveness." "The country thinks too rarely, and too highly, of the 1 percent under fire in our name."
military  war  policy  defense  politics  usa  *  theAtlantic 
january 2015 by pierredv
UK defence ministry confirms 2014 spectrum auction plans — PolicyTracker: the spectrum management newsletter
"Plans by the UK’s Ministry of Defence (MoD) to clear and auction around 200 MHz of spectrum may hint at a role for the regulator Ofcom in the process. That's according to Charles Gay of Espirito, a company specialising in commercialisation through sharing of public sector spectrum. Ofcom, however, sees its role as purely technical."
PolicyTracker  sharing  spectrum  defense  military  MoD  ofcom 
january 2013 by pierredv
Types of Radars
great summary of various types used by militar
wireless  spectrum  DoD  defense  radar  * 
march 2012 by pierredv

Copy this bookmark:

to read