БПЛА и спутниковая связь

[Sharicoff]

И кстати - можно вспомнить туманную историю про то, как Минобороны США выкупило у SES Americom аварийный AMC-14. Теперь AMC-14 со своими 32 стволами Ku-диапазона работает на наклонной геосинхронной орбите над 34.8°в.д.  :roll:

[Sharicoff]

Вот в буклете GE Satellite открытым текстом говорится про работу насавского Global Hawk через спутник GE-23. В диапазоне Ku.

The Global Hawk payload included a satellite antenna to enable continuous transmission of science data and images. NASA procured services on the GE-23 Satellite to provide Ku band satellite connectivity throughout the series of Global Hawk flights.
The GE-23 satellite, located at 172o East, was ideally suited for the mission because its unique Ku-band coverage was specifically designed to support mobile applications across the entire Pacific region. As a result, the Global Hawk was able to stay in contact with the ground control station at NASA's Dryden Flight Research Center in California's Mojave Desert — allowing scientists to monitor sensor data and sensor health status and to send
commands to the sensors.

http://www.gesatellite.com/uploads/documents/CaseStudy_NASA_Global_Hawk_A4v2.pdf

[Sharicoff]

http://www.hostedpayload.com/print/1173

XTAR's fleet is comprised of two satellites, XTAR-EUR and XTAR-LANT, operating in the X-band frequency. The fleet provides overlapping coverage and regional redundancy that features fixed, and steerable beams, as well as high-powered 72 MHz transponders.

Although the satellites already are in orbit, the bandwidth is not application-specific, so they can support and transmit to almost any of the primary architectures used by government agencies. Such applications include fixed-to-fixed, tactical-to-tactical, broadcast and Unmanned Aerial Vehicles (UAVs).

А ведь на XTAR-ах нет Ku, там только X плюс один транспондер Ka на XTAR-LANT.

[Sharicoff]

http://vpk-news.ru/news/2372/

Российские БЛА получат спутниковую связь

Российские беспилотные летательные аппараты на следующий год могут получить спутниковую связь, сообщил журналистам в пятницу директор Московского НИИ, входящего в состав «Концерна «Вега» Юрий Невзоров.

«Наш институт работает над созданием спутниковой связи для беспилотных летательных аппаратов. Это будет достаточно серьезное явление. Сегодня эта задача нигде в мире пока не решена», - сказал Ю.Невзоров на «Гидроавиасалоне-2012».

По его словам, уже на следующий год будут первые результаты этой работы.

Кроме того, НИИ разработана и в текущем году будет смонтирована станция спутниковой связи с широкой пропускной способностью, работающая на быстроходных катерах класса «Мустанг», сказал Ю.Невзоров.

[pkl]

А наши как будут? Через "Лучи"?

Интересно, а американцы не могут ещё SDSы подтянуть для решения задачи?

[Магадан Магадан]

http://vpk-news.ru/news/2372/

Российские БЛА получат спутниковую связь

Российские беспилотные летательные аппараты на следующий год могут получить спутниковую связь, сообщил журналистам в пятницу директор Московского НИИ, входящего в состав «Концерна «Вега» Юрий Невзоров.

«Наш институт работает над созданием спутниковой связи для беспилотных летательных аппаратов. Это будет достаточно серьезное явление. Сегодня эта задача нигде в мире пока не решена», - сказал Ю.Невзоров на «Гидроавиасалоне-2012».

По его словам, уже на следующий год будут первые результаты этой работы.

Кроме того, НИИ разработана и в текущем году будет смонтирована станция спутниковой связи с широкой пропускной способностью, работающая на быстроходных катерах класса «Мустанг», сказал Ю.Невзоров.

г. Ю. Невзоров совсем не в курсе того, что уже сделано и делается в мире да и у нас тоже. При такой "эрудиции" Вега родит чего-нубудь свое, доморощенное и оригинальное, типа VSAT 0,9 м через Экспресс на 500 кбит/с и будет искренне гордится мировым первенством.

[instml]

Astrium Services Hopes Near-global X-band Coverage Will Draw U.S. Government Business

PARIS — Astrium Services, which owns Britain's Skynet 5 X-band military telecommunications satellites, hopes to leverage the coming launch of an X-band payload on a commercial satellite to offer the U.S. government near-global coverage in X-band, Astrium Chief Executive Eric Beranger said Sept. 10.

Astrium Services has ordered a fourth Skynet 5 satellite, Skynet 5D, which is scheduled for launch in December. Also scheduled for launch late this year is the Anik G1 satellite owned by satellite fleet operator Telesat of Canada.

Astrium has leased Anik G1's X-band secondary payload for the satellite's full 15-year life. With Anik G1 and Skynet 5D in operation, Astrium Services will come close to ringing the world with X-band coverage.

Through its Vizada mobile satellite services distributor, which Astrium purchased in late 2011, Astrium Services in August won a piece of the U.S. government's five-year Future Comsatcom Services Acquisition's Custom Satcom Solutions contract.

Astrium is not guaranteed to win any business from this indefinite-delivery, indefinite-quantity contract; it is just one of eight companies winning similar contract vehicles. But with a total contract value of $2.6 billion over five years, and Astrium's X-band portfolio without equal in the private sector, the General Services Administration contract was "a huge success" that gets Astrium Services firmly in the tent of approved U.S. government contractors, Beranger said.

Previous Astrium Services contracts with the U.S. government, he said, have been as the backseat partner with a U.S. company as the main contractor.

Astrium Services is under a long-term contract with the British Ministry of Defence to provide beyond-line-of-sight telecommunications to British forces. Excess capacity that Astrium places into orbit may be used for commercial sales to British allies.

Astrium recently tested an aeronautical mobile X-band terminal, called AirPatrol, with military forces in Canada. The value of the trial was to preserve a link between the Convair CV-580 aircraft and the Skynet 5C X-band satellite long enough and with enough quality to transfer large files of radar imagery taken by the aircraft as part of Canada's Radar and Imaging for the Land/Littoral Environment program.

The tests were done at 73 degrees north latitude, meaning the aircraft's AirPatrol terminal was facing downward to aim at the satellite 36,000 kilometers over the equator, Beranger said. The signal carrying the radar images had to travel through the atmosphere before arriving at Skynet 5C for subsequent download to Canadian program managers.

While Astrium Services has promoted X-band's alleged superiority over Ka-band for mobile military communications, Beranger declined to say whether a Ka-band link would have permitted the data stream to arrive at Skynet 5C without attenuation due to the thick layer of atmosphere between the plane and the satellite.

Military satellite communications is the most important business for Astrium Services in terms of revenue, but the company is also a provider of government and commercial Earth observation imagery through optical and radar Earth observation satellites.

Astrium Services is the operator of the European Data Relay Service, which for now is based on two payloads —one a dedicated data-relay satellite, the other a data-relay terminal on a Eutelsat commercial telecommunications satellite — to relay Earth observation data from low-orbiting observation satellites to ground users.

The system is scheduled to be operational within three years and is already funded by Astrium Services and the 19-nation European Space Agency.

European governments are weighing whether to add a third data-relay platform to the system, which would enable Astrium Services to offer global data-relay services. Beranger suggested that, as with the existing data-relay system, Astrium would be a willing financial contributor to any government effort to co-sponsor a third data-relay system.

"It would be a very, very, very serious plus" for the data-relay effort to offer a third payload, he said.

.......................

http://www.spacenews.com/military/120910-astrium-xband-draw-business.html

[instml]

http://www.novosti-kosmonavtiki.ru/phpBB2/viewtopic.php?t=12982
http://telecom.esa.int/telecom/www/area/index.cfm?fareaid=26

Artemis keeps talking the talk
 
1 June 2012

...................

Its navigation payload is a critical element for the European Geostationary Overlay System (EGNOS), which enhances navigation services data for aircraft and ships.

Artemis has been broadcasting the EGNOS signals since 2003 and supports the EGNOS open service and the safety-of-life service.

Artemis' list of accomplishments includes establishing two-way links in 2006 and 2007 with an aircraft flying over the southern coast of France, receiving video footage at 50 Mbits per second.



Artemis, an artist's impression. Carrying three payloads plus a number of experiments, ARTEMIS (Advanced Relay and Technology Mission Satellite) is being developed for testing and operating new telecommunications techniques.

Credits: ESA - J. Huart

Artemis also provided a two-way link with an unmanned drone dropped from an altitude of 21 km off the coast of Sardinia in 2007. Telemetry and commands were exchanged while the drone was flying in excess of Mach 1.
 
"Since joining the Artemis adventure, I have discovered a team of people working with passion for the success of this mission," said Daniele Galardini, Head of Redu Centre and the Artemis project manager. "Thanks to all, it is an honour to work with them."

http://www.esa.int/esaCP/SEMH30ZWD2H_index_0.html

[Sharicoff]

Rise of UAVs Offers New Opportunities for Commercial Satellite Providers
September 18, 2012
Satcom Frontier

With sequestration looming and troops drawing down in both Afghanistan and Iraq, our nation's government will be relying more on unmanned vehicles (UAVs) for cost-effective surveillance and real-time intelligence. There is an emerging, inverse relationship between the number of boots on the ground and drones in the air.

Many commercial builders of unmanned drones, as well as satellite companies, are expecting to help the government meet this expanded need for unmanned surveillance.  Due to bandwidth challenges on U.S. government satellites and many drones already using commercial satellite transponders, commercial SATCOM is an ideal solution for government and military.

In addition, Kay Sears, President of Intelsat General, recently told the Washington Post that satellite communications needed for unmanned aircraft would be a natural fit for commercial satellite businesses.  

Commercial SATCOM is a critical enabler of UAV operations:

·        It provides a link for command and control, as well as imagery backhaul and dissemination.

·        Sophisticated suites of sensors and the increasing number of UAVs underscores the need for having the right SATCOM solutions meeting demand.

·        Advanced satellite payloads are needed to provide appropriate tradeoffs in coverage, connectivity, and throughput to meet UAV mission requirements.

·        Key commercial providers already have extensive experience in UAV operations.

As a major provider of Ku-band capacity to support command and control and reachback of UAVs, Intelsat General is an organization poised to meet this growing need. Intelsat General has been supporting UAV missions since the nascent days of 2004 and it currently provides more than 950 MHz of bandwidth, supporting about 70 UAV missions.

In addition, as drones have the capability to capture thousands upon thousand of hours of video footage, as well as now having wider footprint beams for increasing areas of coverage, bandwidth management is critical.  Commercial SATCOM providers can meet this need through advances in modulation, coding and compression for more efficient and cost effective access to space assets.

With the government being tasked with doing more with less, UAVs will continue to be a method for meeting mission needs at home and abroad.  Whether it is for enabling the warfighter or for guarding our borders, unmanned surveillance is coming into a renaissance-like era. Commercial providers will be the backbone for meeting this increased SATCOM need.

http://72.10.49.136/blog/rise-uavs-offers-new-opportunities-commercial-satellite-providers

[Humorist]

Sharicoff пишет:
Однако с вводом в эксплуатацию группировки спутников WGS намечается переход к использованию Ka-диапазона.

В частности, здесь http://www.flightglobal.com/airspace/media/reports_pdf/emptys/30931/isr-special-report-2009.pdf сообщается о том, что морской вариант "ГлобалХока" (RQ-4N Global Hawk) будет использовать канал Ka-диапазона.
 

Еще:
 
 http://www.northropgrumman.com/paris2009/images/pdf/paris-as-bams-briefing.pdf

Куски из бюджета ВВС США на 2010 год:
 http://www.dtic.mil/descriptivesum/Y2010/AirForce/0303601F.pdf

Антенна Ku/Ka-диапазонов для переоснащения "ГлобалХока":
 http://tactical.overwatch.com/pdfs/news/2009/0909_global_hawk.pdf

Контракт на разработку кожуха антенны:
 https://www.fbo.gov/index?s=opportunity&mode=form&id=307590d1e9299c10ec7dce97374e5fe7&tab=core&_cview=1

A -- GLOBAL HAWK MULTI-BAND RADOME ANALYSIS SOURCES SOUGHT SYNOPSIS
Solicitation Number: R2357
Agency: Department of the Air Force
Office: Air Force Materiel Command
Location: ESC - Electronic Systems Center


Solicitation Number:
R2357
Notice Type:
Presolicitation
Synopsis:
Added: Mar 18, 2010 3:56 pm
This is not a solicitation. This synopsis is being issued to conduct market research for informational and planning purposes for the High Data Rate-Airborne Terminal (HDR-AT) Program. The United States Air Force, Electronic Systems Center (ESC), Hanscom Air Force Base, 653 ELSW/SNND, is seeking responses from potential sources to perform the up-front technical analysis and testing necessary to develop an airborne satellite antenna radome capable of supporting both Ku commercial and Ka Wideband Global SATCOM (WGS) satellite communication links.

Тесты системы Ka-диапазона:
 http://www.af.mil/news/story.asp?id=123197038

вот что значит санкции, все ссылки по закрывали ((

[Humorist]

...

[Антон Власов]

Humorist, поставь Тор.