转自:http://en.wikipedia.org/wiki/Yaogan
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Yaogan (in full Yaogan Weixing (遥感卫星), "Remote Sensing Satellite"; sometimes written YaoGan) refers to a series of Chinese reconnaissance satellites launched in the early 21st century.The satellites was developed and designed at Shanghai Academy of Space Flight Technology (SAST),subordinated the China Aerospace Science and Technology Corporation(CASC).
Chinese media describe the satellites as intended for "scientific experiments, land survey, crop yield assessment, and disaster monitoring", but Western analysts suspect that they are also used for military purposes.[1] Analysts believe that each satellite employs either optical or synthetic aperture radar (SAR) sensors and that the SAR satellites are of the Jian Bing-5 series.[2]
The satellite was developed by the Shanghai Academy of Space Flight Technology(SAST) under the China Aerospace Science and Technology Corporation(CASC). It is carried into space atop a Chang Zheng (Long March) rocket.[3]
Yaogan satellites have been launched from both the Taiyuan Satellite Launch Center in China's northern Shanxi provice and the Jiuquan Satellite Launch Center in China's northwestern Gansu province.[4]
Yaogan 7 was launched from Jiuquan Satellite Launch Centre atop a Long March 2D, on December 9, 2009. [5]
The latest satellite in the series, Yaogan 8,which was aboard Long March 4C, was launched from Taiyuan Satellite Launch Centre on December 15, 2009. Also on board is a minisatellite, Hope 1.[6]
[edit] Launches
Name |
Military designation |
Launch date |
Believed type |
Approximate orbit |
NORAD ID |
International code |
Launch site |
Launcher |
Yaogan 1 |
JB-5-1 |
April 27, 2006 |
SAR |
635-636 km, 97.9 degrees |
29092 |
2006-015A |
Taiyuan |
Long March 4B |
Yaogan 2 |
JB-6-1 |
May 25, 2007 |
Optical |
638-663 km, 97.9 degrees |
31490 |
2007-019A |
Jiuquan |
Long March 2D |
Yaogan 3 |
JB-5-2 |
November 12, 2007 |
SAR |
635-637 km, 97.8 degrees |
32289 |
2007-055A |
Taiyuan |
Long March 4C |
Yaogan 4 |
JB-6-2 |
December 1, 2008 |
Optical |
640-661 km, 97.6 degrees |
33446 |
2008-061A |
Jiuquan |
Long March 2D |
Yaogan 5 |
JB-8-1? |
December 15, 2008 |
SAR |
494-503 km, 97.4 degrees |
33456 |
2008-064A |
Taiyuan |
Long March 4B |
Yaogan 6 |
JB-7-1? |
April 22, 2009 |
Optical |
517-520 km, 97.6 degrees |
34839 |
2009-021A |
Taiyuan |
Long March 2C |
Yaogan 7 |
JB-6-3 |
December 9, 2009 |
Optical |
630-666 km, 97.8 degrees |
36110 |
2009-069A |
Jiuquan |
Long March 2D |
Yaogan 8 |
unknown |
December 15, 2009 |
unknown |
unknown |
36121 |
2009-072A |
Taiyuan |
Long March 4C |
Table data sourced from previously cited references and "Real Time Satellite Tracking" (in English). Web site. N2YO.com. http://www.n2yo.com. Retrieved 2009-12-17. |