MUOS-2 - Atlas V 551 - Canaveral SLC-41 - 19.07.2013 13:00 UTC

[ivan555]

G.K. пишет:
 Меня в первкю очередь интересует то, что MUOS2 будет передавать. Американские военные данные. Наследник флитсаткомов?

В любом случае, там есть обычные транспондеры UHF диапазона, стандартные для UFO, Fleetsatcom, Skynet, Sicral. По крайней мере, про "Legacy" написано, что  поддерживается.

G.K. пишет:
Это вам надо заглянуть на сисат или скачать ТЛЕ от независимых наблюдателей. Если они не увидят сабж- то придётся ждать Европейского классификатора, там он точно будет.

Ok. Жду.  Пока нет данных.

G.K. пишет:
Это моё глупое предположения из ролика AGI, где из через 90 градусов расставили. Может и не там.

Через 90 градусов выглядит логичным, ибо активных намечено 4 штуки и еще один запасной.
Естественно, никто их не поставит ровно через 90 градусов.
Но то, что MUOS1 поставили над штатами, дает высокую вероятность, что следующий будет уже в нашей видимости. 

[G.K.]

ivan555 пишет:
В любом случае, там есть обычные транспондеры UHF диапазона, стандартные для UFO, Fleetsatcom, Skynet, Sicral. По крайней мере, про "Legacy" написано, что поддерживается.

Ну вот и договорились    

ivan555 пишет:
Ok. Жду. Пока нет данных.

Как увижу, что появится- напишу. 
Ivan555 , проверьте, пожалуйста, личные сообщения- это наверху строка "Обновления |Профиль|Сообщения(1)|" и там "входящие" или почту, на которую зарегистрирован ваш аккаунт. Я вам там писал.

ivan555 пишет:
Через 90 градусов выглядит логичным, ибо активных намечено 4 штуки и еще один запасной.

Ну да, как бы то же логично.

ivan555 пишет:
Естественно, никто их не поставит ровно через 90 градусов.

Угумс.

[instml]

New Navy satellite spreads wings, antennas in orbit

BY JUSTIN RAY
SPACEFLIGHT NOW
Posted: August 2, 2013

The massive U.S. Navy communications satellite launched from Cape Canaveral two weeks ago has completed prescribed maneuvers to reach geosynchronous orbit and successfully unfurled its umbrella-like antenna reflectors.

Checkouts of the spacecraft that are expected to last several months are getting underway high above the Pacific Ocean testing location before the bird will be declared ready for service.

The craft will be capable of covering nearly a third of the planet to provide mobile communications to U.S. warfighters on the move.

"Currently, all systems are working normally," said Steven A. Davis of the Space and Naval Warfare Systems Command.

The Mobile User Objective System satellite No. 2 was lofted into space July 19 by the United Launch Alliance Atlas 5 rocket, achieving a highly elliptical preliminary orbit as planned.

From there, the Lockheed Martin-built satellite performed a series of 7 engine firings to circularize the orbit and reduce its orbital tilt closer to the equator. The burns, which ranged from 23 to 52 minutes in length, put the spacecraft into the proper geosynchronous orbit 22,300 miles up.

The orbit was reached on July 31, and the following 36 hours saw the spacecraft achieve its "flight configuration" by executing critical deployments of the power-generating solar wings that now stretch 94 feet tip-to-tip and two gold mesh, umbrella-like antenna reflectors.

The antennas provide the same type of Ulta High Frequency communications like previous Navy spacecraft and the other offers modernized capabilities that the new MUOS system will create.

Coverage to legacy users will transmit through a 17.7-foot-diameter reflector on the bottom of the craft and the advanced, multi-beam features of MUOS to significantly increase the transmission capacity over the Navy's previous satellites will use a large 46-foot reflector atop MUOS.

All U.S. military forces rely upon Navy satellites for Ultra High Frequency narrowband communications. UHF offers small, portable units that forces can carry into battle and the frequency enables communications in urban canyons and mountainous terrain, penetrating foliage and transmitting through bad weather.

Each MUOS satellite has 16 times the capacity of the aging UHF satellite constellation.

What's more, MUOS also creates a new "rugged smartphone" network to provide 3G-like cellular telephone and data services across the globe when the constellation is fully launched in the next couple of years.

Now begins several months of satellite system and payload testing before builder Lockheed Martin hands over the MUOS 2 craft to the government for additional checks in advance of setting it operational in early 2014.

http://www.spaceflightnow.com/atlas/av040/geo.html

[Shin]

Так как там с точками стояния первых двух аппаратов? Чё-то не нашел ваще...

[Sharicoff]

Первый на начало года стоял в 177 запада (см. европейский классификатор). По второму в открытых источниках данных нет.

[G.K.]

Sharicoff пишет:
По второму в открытых источниках данных нет.

Стоп. А куда его могли поставить вне зоны видимости сообщества? Рядом их ставить нет резона ( имхо). так как никакой объективной причины для огромных потоков данных сейчас в том регионе нет.

[Shin]

Че-то проскакивало, что второй встанет над Гавайами, т.е. в 177. Тогда первый переведут куда-нибудь наверно.
Вообще, это напоминает "Неуловимого Джо", которого никто не ловит))

[G.K.]

Shin пишет:
Вообще, это напоминает "Неуловимого Джо", которого никто не ловит))

Да, ситуация весьма интересная. Неужели на Гавайях нет никого, кто мог бы:
1. Снять небо
2. Написать на сисат?

[Брабонт]

Неужели в России нет никого, кто мог бы:

1. Найти подходящую all-sky камеру.
2. Вырезать нужную область вблизи равноденствия.
3. Померять и написать на сисат?

[ivan555]

Неделю назад на UFO2 были выключены 3 транспондера в нижней части UHF диапазона.
Остальные работают как и раньше.
Возможно, расчищают диапазон для нового аппарата.

[Sharicoff]

In a presentation here, Justin Keller, director of advanced programs in Lockheed Martin's military space systems office, said a C-130 transport aircraft fitted with an omnidirectional blade antenna maintained calls via MUOS while flying to 89.5 degrees north. The same performance could be expected in the Antarctic, he said.

Keller said MUOS's design specifications call for the system to be able to maintain stable 24/7 call connectivity up to 65 degrees north latitude. But MUOS's key advantage over the legacy UHF satellite communications systems that it is succeeding is its Wideband Code Division Multiple Access (WCDMA) payload.

The 16 WCDMA beams are designed to offer much faster tactical communications links, up to 384 kilobits per second.

Keller said the C-130 was flying at a speed of 300 knots at an altitude of 7 kilometers. An equivalent link between MUOS and a user standing at sea level would have been 83 degrees north, he said. He cautioned that stable communications at this latitude would not be assured on a 24/7 basis, but that the demonstration showed that some operations were possible much farther north than expected.

Global warming has made the Northwest Passage much more popular as a commercial sea route, and the widening ice-free areas make the region much more valuable, and potentially contested, for its energy and mineral deposits.

Russia, Canada and Norway are all planning space systems to survey the Arctic region.

In addition to its 16-beam WCDMA capacity, delivered through a 14-meter-diameter unfurlable mesh antenna built by Harris Corp. of Melbourne, Fla., MUOS carries a legacy UHF payload designed to work with UHF radios already on the market and used by several allied nations to assure communications links for their troops.

Keller said the same flights that established the links with the MUOS WCDMA payload could not complete calls using the legacy UHF payload on MUOS despite efforts using this payload's 5- and 25-kilohertz channels.

Several allied nations have purchased F-35 Joint Strike Fighter aircraft that, in principle, are designed with communications links to MUOS's WCDMA payload. But the nations making these purchases are not receiving the communications pods with WCDMA because that payload is reserved for U.S. use only.

At least for now. Harold Haney, chief of space and missile defense in the Command, Control, Communications and Computers Division of the U.S. Strategic Command in Omaha, Neb., said the idea of opening all of MUOS's capability to allies is a regular subject of debate.

"This could change. But until there are some political requirements for cooperation [with allies] on MUOS, we cannot change the policy," Haney told the conference. "The F-35s that were sold to a number of nations were not sold with the MUOS boxes in it. The buyers will decide on the comms options themselves."

http://www.spacenews.com/article/military-space/38051us-allies%E2%80%99-access-to-muos-debated-after-north-pole-satcom-demo