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China Launches Compass MEO

Inside GNSS, Spring 2007

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China has taken the next step in developing its Compass GNSS system, launching the nascent system’s first medium Earth orbit (MEO) satellite into space on April 14.

The spacecraft joins four geostationary Earth orbit (GEO) satellites launched previously, which will be incorporated into an eventual Compass system of 5 GEOs and 30 MEOs, according to reports from the China news agency Xinhua. A few days earlier, China had overcome difficulties with the most recent GEO launched February 3 and indicated it was successfully in place.

Chinese sources say the system is expected to provide services to customers over China and neighboring countries by 2008, before being expanded into a global network.

The carrier rocket, a Long March 3-A, blasted off from the Xichang Satellite Launch Center in China’s Sichuan Province and was reported to have “accurately” entered its orbit at a height of about 13,300 miles. The GEOs are located about 22,000 miles above the Earth.

Xinhua cited “sources” as saying China is willing to cooperate with other countries in developing its satellite navigation industry to allow the “Compass” system to operate with other GNSSes. However, to date, those talks have apparently not begun.

In comments at the recent Munich Satellite Navigation Summit, Ralph Braibanti, director of the U.S. State Department’s Office of Space & Advanced Technology, pointed to several successful bilateral discussions under way on GNSS, noting, “It’s important that the Chinese conduct the same type of meticulous negotiations with other providers, including the United States and Europe . . . to ensure that signals are compatible and interoperable.”

Copyright 2007 Gibbons Media and Research LLC

Copyright © 2007 Gibbons Media & Research LLC, all rights reserved.

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