GPS III-01 - Falcon 9 - Canaveral SLC-40 - 23.12.2018 13:51 UTC

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Salo

http://www.lockheedmartin.com/us/news/press-releases/2013/july/0715-ss-gps.html
ЦитироватьLockheed Martin Delivers Antenna Assemblies For Integration On First GPS III Satellite

DENVER, July 15, 2013 – Lockheed Martin [NYSE] has completed and is preparing to install the navigation, communication, and hosted payload antenna assemblies for the first satellite of the next generation Global Positioning System, known as GPS III.

Seven antenna assemblies, produced at Lockheed Martin's Newtown, Pa. facility, were delivered to the company's GPS III Processing Facility (GPF) near Denver, Colo. on June 14.  The antennas will be installed on the first GPS III space vehicle (SV 01), which Lockheed Martin will deliver to the U.S. Air Force on schedule, "flight-ready," in 2014.

The new antennas for GPS III SV 01 will provide the satellite's capability to send and/or receive data for earth-coverage and military earth-coverage navigation; a UHF crosslink for inter-satellite data transfer; telemetry, tracking and control for satellite-ground communications; and data acquisition and communication for the nuclear detection system hosted payload.  The antenna designs enable three to eight times greater anti-jamming signal power to be broadcast to military users across the globe when compared to previous GPS generations.

"These antennas on the next generation of GPS III satellites will transmit data utilized by more than one billion users with navigation, positioning and timing needs," explained Keoki Jackson, vice president of Lockheed Martin's Navigation Systems mission area.  "We have become reliant on GPS for providing signals that affect everything from cell phones and wristwatches, to shipping containers and commercial air traffic, to ATMs and financial transactions worldwide."

GPS III is a critically important program for the Air Force, affordably replacing aging GPS satellites in orbit, while improving capability to meet the evolving demands of military, commercial and civilian users.  GPS III satellites will deliver three times better accuracy, include enhancements which extend spacecraft life 25 percent further than the prior GPS block, and a new civil signal designed to be interoperable with international global navigation satellite systems.

The production of the first GPS III satellite continues on schedule.  Recent testing of the SV 01 bus – the portion of the space vehicle that carries mission payloads and hosts them in orbit –assured that all bus subsystems are functioning normally and that they are ready for final integration with the satellite's navigation payload.

This milestone follows February's successful initial power on of the SV 01 spacecraft bus, which demonstrated the electrical-mechanical integration, validated the satellite's interfaces and led the way for functional electrical hardware-software integration testing.  

Lockheed Martin is currently under contract for production of the first four GPS III satellites (SV 01-04), and has received advanced procurement funding for long-lead components for the fifth, sixth, seventh and eighth satellites (SV 05-08).

The GPS III team is led by the Global Positioning Systems Directorate at the U.S. Air Force Space and Missile Systems Center. Lockheed Martin is the GPS III prime contractor with teammates ITT Exelis, General Dynamics, Infinity Systems Engineering, Honeywell, ATK and other subcontractors. Air Force Space Command's 2nd Space Operations Squadron (2SOPS), based at Schriever Air Force Base, Colo., manages and operates the GPS constellation for both civil and military users.

Headquartered in Bethesda, Md., Lockheed Martin is a global security and aerospace company that employs about 118,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration, and sustainment of advanced technology systems, products, and services. The Corporation's net sales for 2012 were $47.2 billion.
http://www.lockheedmartin.com/us/products/gps.html


http://www.lockheedmartin.com/content/dam/lockheed/data/space/documents/gps/gpslllbrochurereviewrev8.pdf
http://www.lockheedmartin.com/content/dam/lockheed/data/space/documents/gps/GPF%20Fact%20Sheet.pdf
http://www.lockheedmartin.com/content/dam/lockheed/data/space/documents/gps/GPSIII_FactSheetFINAL1.pdf
"Были когда-то и мы рысаками!!!"

Salo

http://www.militaryparitet.com/ttp/data/ic_ttp/5995/
ЦитироватьПервый спутник GPS III обрастает антеннами

16 июля 2013 г.

«Военный Паритет». Американская компания Lockheed Martin завершила сборку и готовит семь антенн для установки на первый спутник нового поколения системы GPS III, сообщает ASDNews 15 июля.

Антенны произведены на объекте компании в Ньютаун (Пенсильвания) и 14 июля были доставлены в интеграционный центр GPS III Processing Facility (GPF, Денвер, Колорадо), принадлежащий Lockheed Martin, для установки на спутник GPS III (SV 01). Вывод спутника на орбиту намечен на 2014 год.

Новые антенны предоставят спутнику улучшенные возможности передачи/приема информации для гражданских и военных пользователей, межспутникового обмена данными, проведения телеметрии, слежения и контроля, точность определения координат земного объекта выполняется, как на всех спутниках GPS, с помощью высокоточных атомных часов, синхронизируемых с системным временем.  Конструкция антенных устройств позволяет в 3-8 раз повысить устойчивость сигнала.

«Эти антенны предназначены для нового поколения спутников и будут передавать данные для более чем одного миллиарда пользователей. GPS передает информацию на мобильные телефоны, наручные часы, используются для навигации в морских и воздушных перевозках, проведения операций в банкоматах и финансовых учреждениях по всему миру», поясняет вице-президент отделения навигационных систем компании Кеоки Джексон (Keoki Jackson).

Новое поколение спутников заменит стареющий парк аппаратов предыдущего поколения (первый спутник GPS Block IIA-10 (SVN-23) производства компании Boeing был запущен 26 ноября 1990 года – прим. «ВП»), имеет улучшенные характеристики для удовлетворения растущих потребностей военных, коммерческих и гражданских пользователей. Спутники GPS III будут иметь в три раза лучшую точность определения координат и увеличенную на 25% срок службы на орбите по сравнению со спутниками базовой системы. Гражданский канал связи способен взаимодействовать с другими международными глобальными спутниковыми навигационными системами.

В настоящее время компания выполняет контракт на производство четырех первых спутников GPS III (SV 01-04), затем будет собрана вторая партия, также состоящая из четырех аппаратов (SV 05-08).

Программа GPS III реализуется под руководством Директората глобальных спутниковых систем, расположенного в Центре космических и ракетных систем ВВС США (US Air Force Space and Missile Systems Center). Головным подрядчиком программы является Lockheed Martin в партнерстве с субподрядчиками ITT Exelis, General Dynamics, Infinity Systems Engineering, Honeywell, ATK и других. Управление орбитальной группировкой в интересах военных и гражданских пользователей ведет 2-я эскадрилья космических операций (2nd Space Operations Squadron - 2SOPS) Космического командования ВВС США (базируется на базе ВВС Шривер, Колорадо).

http://www.asdnews.com/news-50194/LM_Delivers_Antenna_Assemblies_for_Integration_on_1st_GPS_III_Satellite.htm

см. также

16.05.08 США увеличат мощность сигнала GPS в 500 раз

http://www.militaryparitet.com/teletype/data/ic_teletype/2575/
 

03.07.08 Boeing завершил наземные испытания новейшего спутника GPS второго поколения

http://www.militaryparitet.com/teletype/data/ic_teletype/2966/
 

23.06.10 Сформирована концепция GPS IIIB

http://www.militaryparitet.com/teletype/data/ic_teletype/7863/
 

05.12.10 Первый спутник GPS работает на орбите уже 20 лет

http://www.militaryparitet.com/perevodnie/data/ic_perevodnie/1224/
 

13.01.12 Lockheed Martin построит два спутника GPS III

http://www.militaryparitet.com/teletype/data/ic_teletype/13488/
"Были когда-то и мы рысаками!!!"

Salo

#2
http://www.lockheedmartin.com/us/news/press-releases/2013/july/0722-ss-gps.html
ЦитироватьLockheed Martin GPS III Satellite Prototype To Help Cape Canaveral Air Force Station Prep For Launch
 
CAPE CANAVERAL AIR FORCE STATION, July 22, 2013 – Lockheed Martin [NYSE: LMT] recently delivered a full-sized, functional prototype of the next-generation Global Positioning System (GPS) satellite to Cape Canaveral Air Force Station to test facilities and pre-launch processes in advance of the arrival of the first GPS III flight satellite.
 The GPS III Non-Flight Satellite Testbed (GNST) arrived at the Cape on July 19 to begin to dry run launch base space vehicle processing activities and other testing that future flight GPS III satellites will undergo. The first flight GPS III satellite is expected to arrive at the Cape in 2014, ready for launch by the U.S. Air Force in 2015.
The GNST arrived at the Cape by Air Force C-17 aircraft from Buckley Air Force Base near Lockheed Martin's GPS III Processing Facility (GPF) in Denver, Colo.  Prior to shipment, the GNST was developed and then completed a series of high-fidelity activities to pathfind the integration, test and environmental checkout that all production GPS III satellites undergo at Lockheed Martin's new satellite manufacturing facility.
An innovative investment by the Air Force under the original GPS III development contract, the GNST has helped to identify and resolve development issues prior to integration and test of the first GPS III flight space vehicle (SV 01).  Following the Air Force's rigorous "Back-to-Basics" acquisition approach, the GNST has gone through the development, test and production process for the GPS III program first, significantly reducing risk for the flight vehicles, improving production predictability, increasing mission assurance and lowering overall program costs.
"We call the GNST a 'pathfinder' because it has truly blazed the trail for every one of our GPS III processes from initial development, production, integration and test, and now pre-launch activities," explained Keoki Jackson, vice president for Lockheed Martin's Navigation Systems mission area.  "All future GPS III satellites will follow this same path, so the GNST was a smart initiative to help us discover and resolve any issues in advance, implement production efficiencies, and ultimately save a tremendous amount of time and money in the long run."
GPS III is a critically important program for the Air Force, affordably replacing aging GPS satellites in orbit, while improving capability to meet the evolving demands of military, commercial and civilian users.  GPS III satellites will deliver three times better accuracy, include enhancements which extend spacecraft life 25 percent further than the prior GPS block, and a new civil signal designed to be interoperable with international global navigation satellite systems.
Lockheed Martin is currently under contract for production of the first four GPS III satellites (SV 01-04), and has received advanced procurement funding for long-lead components for the fifth, sixth, seventh and eighth satellites (SV 05-08 )  .
The GPS III team is led by the Global Positioning Systems Directorate at the U.S. Air Force Space and Missile Systems Center. Lockheed Martin is the GPS III prime contractor with teammates ITT Exelis, General Dynamics, Infinity Systems Engineering, Honeywell, ATK and other subcontractors. Air Force Space Command's 2nd Space Operations Squadron (2SOPS), based at Schriever Air Force Base, Colo., manages and operates the GPS constellation for both civil and military users.
Headquartered in Bethesda, Md., Lockheed Martin is a global security and aerospace company that employs about 118,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration, and sustainment of advanced technology systems, products, and services. The Corporation's net sales for 2012 were $47.2 billion.
 

The GPS III Non-Flight Satellite Testbed (GNST) completed pathfinding activities at Lockheed Martin's state-of-the-art GPS III Processing Facility outside of Denver prior to it shipping to Cape Canaveral Air Force Station to test facilities and pre-launch processes there in advance of the arrival of the first GPS III flight satellite.
 
 Additional Information:
 
"Были когда-то и мы рысаками!!!"

Salo

"Были когда-то и мы рысаками!!!"

che wi

#4
First GPS III satellite completes critical test

ЦитироватьThe first GPS III satellite has passed a critical test, according to satellite builder Lockheed Martin.

Rick Ambrose, executive vice president of Lockheed Martin Space Systems of Denver, tweeted that the satellite has successfully its thermal vacuum test (TVAC).

Lockheed Martin Space Systems is the prime contractor on the GPS III program to build the next-generation of navigation satellites, a total of eight in the original contract. The contract includes options for up to four more satellites, and the Air Force has told Congress it expects to execute options for at least two of those satellites.

The first GPS III satellite is expected to launch in 2017.

che wi

GPS III satellite passes thermal vacuum test

ЦитироватьOn Dec. 23, Lockheed Martin's first GPS III satellite for the U.S. Air Force completed system-level Thermal Vacuum (TVAC) testing, validating the design of the entire assembled satellite. TVAC is a rigorous test designed to prove a satellite's integrity and operational capabilities by subjecting it to prolonged cycles of simulated space temperature extremes in a special depressurized chamber.

"TVAC is the most comprehensive and perceptive test performed at the spacecraft level. If there is an issue with your design or production processes, you are going to find it here," said Mark Stewart, vice president of Lockheed Martin's Navigation Systems mission area. "Successful completion of this significant test validates the thermal design of the spacecraft and verifies that all spacecraft components and interfaces operate at the temperature extremes of the space environment. We credit this performance to the Back to Basics work we performed earlier and the program's unique GPS III Non-flight Satellite Testbed."

Спойлер
In spring 2015, the GPS III satellite's major functional components were successfully integrated to form the first complete satellite. In the fall, the new satellite also successfully completed acoustic testing, where it was pounded with sound waves to simulate the vibrations it will endure during its launch.

With eight satellites under contract, the production line is now on a steady tempo at Lockheed Martin's GPS III Processing Facility outside of Denver, Lockheed Martin said. The first four GPS III satellites are in various stages of assembly and test with most major components — including their structure and propulsion systems, solar arrays, and antennas — already delivered.

This spring, with Harris Corporation's delivery of its second navigation payload, the second GPS III satellite is expected to be integrated and begin environmental testing.

Components for the next four GPS III satellites are already being assembled, tested and delivered on schedule by more than 250 aerospace industry companies from 29 states.

"We have a world-class industry team supporting the development and production of GPS III for the Air Force and our nation," continued Stewart. "I thank them for their excellent work and commitment to this program."
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GPS III will deliver three times better accuracy, provide up to eight times improved anti-jamming capabilities and extend spacecraft life to 15 years, 25 percent longer than the satellites launching today. GPS III's new L1C civil signal also will make it the first GPS satellite to be interoperable with other international global navigation satellite systems.


Прол

#7
Тяжело, однако, в штатах идут работы по GPS. IIF делали около 14 лет до первого пуска, III должен был полететь в 2014 г., ушел (пока?) на 2017, т.е. более 9 лет разработки... Похоже на организационный бардак, финансовые и технические проблемы. Что-то это смутно напоминает  :o  ...

che wi

ЦитироватьThe system advances to GPS 3 starting next year, with the first launch planned for May 2017 aboard a Delta 4 rocket.
http://spaceflightnow.com/2016/02/07/recap-story-last-gps-satellite-of-its-generation-arrives-in-space/

che wi

Lockheed Martin says first GPS 3 satellite delayed until December

ЦитироватьWASHINGTON – Lockheed Martin has pushed back the delivery of the first satellite in the U.S. Air Force's next generation of positioning, navigation and timing satellites by four months after discovering a problem with the navigation payload, the company said Sept. 14.

Lockheed Martin officials had said in March that they had planned to deliver the first of the GPS-3 satellites to the Air Force in August, but now expect the satellite to be available in December.

While the Air Force previously has said the satellite would launch no earlier than 2017, some industry officials expect that a 2018 launch is more likely especially as the Pentagon absorbs delays with the next-generation GPS ground system known as the Operational Control Segment.

"During our rigorous navigation payload testing, we discovered a capacitor type on the payload that had not been properly qualified per the program's approved parts control plan," Chip Eschenfelder, a Lockheed Martin spokesman said in a Sept. 14 email to SpaceNews. "Upon discovering the issue, we took immediate corrective action with the payload provider to qualify the capacitor. The capacitor qualification test forecast completion is December 2016."

Спойлер
The GPS 3 program is more than 28 months behind schedule, owing largely to previous problems with the advanced navigation payload developed by Exelis Geospatial Systems of Rochester, New York, now owned by Harris Corp.

In a Sept. 14 statement, Ellen Mitchell, a Harris spokeswoman, said the capacitor was one of 28,000 parts used in the payload and had been provided by a sub-contractor. Harris did not identify the sub-contractor.

Lockheed Martin Space Systems is the prime contractor on the GPS 3 program and is under contract to build eight next-generation satellites. The contract includes options for up to four more satellites, and the Air Force has told Congress it expects to execute options for at least two of those satellites. The Government Accountability Office estimates the total GPS 3 program will cost about $5 billion.

The Sept. 14 announcement comes as the Air Force is in the early stages of a competition for the next batch of satellites that is expected to begin with the 11th space vehicle. Lockheed Martin, Boeing and Northrop Grumman are vying for contracts and are expected to include new digital navigation payloads as part of their bids.
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тавот

Цитироватьche wi пишет:
"During our rigorous navigation payload testing, we discovered a capacitor type on the payload that had not been properly qualified per the program's approved parts control plan," Chip Eschenfelder, a Lockheed Martin spokesman said in a Sept. 14 email to SpaceNews. "Upon discovering the issue, we took immediate corrective action with the payload provider to qualify the capacitor. The capacitor qualification test forecast completion is December 2016."

Конденсаторы не на местном Митинском рынке закупались ?  :D    Злые язики говорили, что и комплектующие для бесславного Ф-Г были оттуда же родом.  :(
Three, two, one, ignition, and liftoff !

Охотник утки, пьющий водки !

Это ещё не сверхтяж, но уже и не супертяж.© Д.О.Р.

PIN

Цитироватьтавот пишет:
Конденсаторы не на местном Митинском рынке закупались ?
Зря пишите, не представляя, о чем речь, а она не о замене, а именно о qualification. 
Ответственные за качество могли и просмотреть, что компонент не qualified для конкретного применения/условий эксплуатаций. Это нередко случается на самом деле, чаще NCR принимается "оставить как есть" (редко аппараты улетают с менее чем десятком таких), но не всегда. 
Это там, где контроль такой налажен. У других проблем вроде бы и нет подобных вообще. Случаются лишь другие, во время эксплуатации...

thunder26

ЦитироватьSOE пишет:
Ответственные за качество могли и просмотреть, что компонент не qualified для конкретного применения/условий эксплуатаций.
Маловероятно. На каждое оборудование выпускается Declared Components List где для каждого компонента приведен уровень квалификации и статус квалификации, необходимость РФА, наличие радиспытаний на уровне пластины и т.д и т.п. Дополнительно на каждый компонент согласуется PAD.
Скорее требуемая квалификация не была проведена вовремя. 
Очень трудно сделать точный прогноз, особенно о будущем (с) Нильс Бор

PIN

Цитироватьthunder26 пишет:
Скорее требуемая квалификация не была проведена вовремя.
Да что угодно может быть. Не qualified компоненты я видел на уже собранных аппаратах, это случается при таком их количестве.

che wi

Lockheed Hit by U.S. Air Force for More GPS III Satellite Flaws

ЦитироватьBotched testing by a Lockheed Martin Corp. subcontractor on a key component for the U.S.'s newest Global Positioning System satellites raises new questions about the No. 1 defense contractor's supervision of the project, according to a top Air Force official.

The mistake by subcontractor Harris Corp. forced another delay in the delivery of the first of 32 planned GPS III satellites until later this month, according to Major General Roger Teague, the Air Force's chief of space programs. That will make the $528 million satellite 34 months late, according to service data.

Спойлер
Lockheed has a contract to build the first 10 of the satellites designed to provide a more accurate version of the Global Positioning System used for everything from the military's targeting of terrorists to turn-by-turn directions for civilians' smartphones. The program's latest setback may affect a pending Air Force decision on whether to open the final 22 satellites to competition from Lockheed rivals Boeing Co. and Northrop Grumman Corp.

"This was an avoidable situation and raised significant concerns with Lockheed Martin subcontractor management/oversight and Harris program management," Teague said in a Dec. 21 message to congressional staff obtained by Bloomberg News.


Ceramic Capacitors

The parts in question are ceramic capacitors that have bedeviled the satellite project. They take higher-voltage power from the satellite's power system and reduce it to a voltage required for a particular subsystem.

Last year, the Air Force and contractors discovered that Harris hadn't conducted tests on the components, including how long they would operate without failing, that should have been completed in 2010.

Now, the Air Force says it found that Harris spent June to October of last year doing follow-up testing on the wrong parts instead of samples of the suspect capacitors installed on the first three satellites. Harris "immediately notified Lockheed and the government" after a post-test inspection, Teague said in his message.

Lockheed spokesman Chip Eschenfelder said in an e-mail said that testing of the capacitors' design was successfully completed in December.

"The capacitors met all mission qualification requirements," he said, so "we are confident the capacitors are mission-ready."


'Successfully Completed'

Harris spokeswoman Ellen Mitchell said in an e-mail that company personnel last year identified a capacitor "that was not subjected to all required qualification tests. Once the issue was discovered, Harris deployed a team dedicated to complete the required capacitor tests. The capacitor qualification testing was successfully completed in December 2016."

But Teague said in an interview that Harris was required to perform not only a test to show that the part met design specifications but a separate one to assess the component's reliability and whether it met a requirement to last 15 years. That second test wasn't accomplished because "they used the wrong test item," he said.

Cristina Chaplain, a military space systems director at the Government Accountability Office, said in an e-mail that the latest problem "undermines the faith in the progress, if any, that the government and contractor may have been making in turning around a culture that has led to multiyear delays" and cost increases.
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The Air Force has decided to accept the first satellite even if its capacitors may be flawed because removing them could delay the delivery until October and cost about $70 million, Teague wrote to the congressional staff. The Air Force is confident in the first satellite's overall reliability based on 3,000 hours of cumulative testing, Teague said.

Спойлер
The Air Force will have to pay to replace the suspect capacitors on the second and third satellites. That's because the satellites are being developed under cost-reimbursement-type contracts, which require the Pentagon to pay for cost increases, the service said.

In an Air Force list of priorities that lacked funding for this year, the service said it needed $100 million for GPS III "capacitor repair/replace." Captain AnnMarie Annicelli, an Air Force spokeswoman, said the list represented potential expenditures on which final decisions had not been made.
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che wi

Цитировать/.../

All of these satellites are now following the Air Force's first GPS III satellite, GPS III SV01, through a proven assembly, integration and test flow. SV01 completed its final Factory Functional Qualification Testing and was placed into storage in February 2017 ahead of its expected 2018 launch.
http://news.lockheedmartin.com/2017-06-26-GPS-III-in-Full-Production-Second-Lockheed-Martin-Satellite-Assembled-Ready-to-Begin-Environmental-Testing

che wi

U.S. Air Force Declares First Lockheed Martin GPS III Satellite "Available for Launch"

ЦитироватьDENVER, Oct. 10, 2017 /PRNewswire/ -- Ushering in a new era of advanced Global Positioning System (GPS) technology, the U.S. Air Force declared the first Lockheed Martin (NYSE: LMT)-built GPS III satellite "Available for Launch."

The Air Force's "AFL" declaration is the final acceptance of Lockheed Martin's first GPS III Space Vehicle (GPS III SV01) prior to its expected 2018 launch. GPS III SV01 will bring new capabilities to U.S. and allied military forces, and a new civil signal that will improve future connectivity worldwide for commercial and civilian users.

GPS III SV01 now awaits a call up to begin pre-launch preparations. In the meantime, the advanced satellite is stored in an environmentally-controlled clean room, where engineers can perform maintenance and continue to service the satellite.

Спойлер
New GPS Capabilities:

GPS III SV01 is the first space vehicle of an entirely new satellite design. GPS III is a next generation technology and capability leap over any of the 31 GPS Block II satellites that currently populate today's operational GPS constellation.

Better Accuracy: For military forces, precision is essential. GPS III signals will provide them three times more accuracy than any current GPS satellites. How accurate is that?  We cannot get specific, but stretch your arms out, we are within that range now.
 
Improved Anti-Jam: It is no secret that future adversaries will try to nullify tools like GPS that give our military an edge in conflicts. GPS III's powerful new signals have eight times improved anti-jamming capability, and the satellites' nearly 70 percent digital payload will provide the Air Force with greater operational flexibility.
 
Stronger Design: Space is a tough neighborhood and GPS III is built tough. GPS III comes with a more resilient design and a design life which can expand its operational life to 15 years. That's 25 percent longer than the newest GPS satellites on-orbit today.
 
New Civil Signal: GPS III will be the first GPS satellite broadcasting L1C, a new, common signal being adopted by other international Global Navigation Satellite Systems (GNSS), like Europe's Galileo. In the future, users of civilian GPS receivers will be able to connect to L1C from multiple GNSS constellations, allowing for greater connectivity.

Designed for the Future:

One of the keys to Lockheed Martin's GPS III is it was designed for today's mission with an eye on tomorrow's needs.

"As we designed GPS III, we knew that mission needs would change in the future and that new technology will become available. We wanted the satellite to be flexible to adapt to those changes," said Mark Stewart, vice president of Lockheed Martin's Navigation Systems mission area. "To do that, we intentionally developed GPS III with a modular design. This allows us to easily ins ert new technology in to our production line."

Future satellites – already with a robust, production-ready design -- also would benefit from the inherent risk-reductions already proven out in GPS III, like compatibility with OCX and the existing GPS constellation. Significant work has already been completed on future requirements like an accuracy-improving Laser Retro-reflector Array and a Search and Rescue payload.

For Lockheed Martin, the completion of GPS III SV01 is a major milestone on a challenging development program to design and build the most powerful GPS satellites ever envisioned.  With all major development risks behind them, the company is now in full production on ten GPS III satellites at its GPS III Processing Facility near Denver.

"Lockheed Martin's GPS III team owes much of its success to the Air Force's Back to Basics program," Stewart added. "We are proud to partner with the Air Force on this important program and look forward to launching the first GPS III satellite in 2018".

The GPS III team is led by the Global Positioning Systems Directorate at the U.S. Air Force Space and Missile Systems Center. Air Force Space Command's 2nd Space Operations Squadron (2SOPS), based at Schriever Air Force Base, Colorado, manages and operates the GPS constellation for both civil and military users.
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che wi

Согласно декабрьскому докладу с сайта Счётной палаты США, запуск GPS III SV-01 планируется не ранее мая 2018 года с использованием Falcon 9 (вместо Delta IV).

http://www.gao.gov/assets/690/688936.pdf


Чебурашка

О... Флакону доверили очень важную и серьёзную нагрузку.

Стоп, а GPS-III сам скругляет орбиту?

PIN

ЦитироватьЧебурашка пишет:
Стоп, а GPS-III сам скругляет орбиту?
Зачем ему "скруглять орбиту" ?