China Strives to Meet World Best Standards for Its Large Military SatellitesPosted: May 7, 2014
China has kept on improving its satellite technology. It has developed Jianbing series of recoverable remote sensing satellites, Fengyun series of weather satellites, Shijian series of scientific experiment satellites, Dongfanghong series of communications satellites and a series of high-resolution earth observation satellites. Among them, Gaofen-1 represents the highest standard of China’s earth observation satellite.
Gaofen-1 is the first satellite of China’s major project of a high-resolutin series of earth observation satellites. The project fully commenced in May 2012 and is scheduled to complete China’s independent land, atmosphere and ocean observation system by 2020. It is mainly a civil satellite project, but foreign experts believe due to the high resolution, it is a valuable military assets due to its ability in identifying aircrafts and tanks.
Gaofen-1’s full-color resolution is 2 meters and multispectral resolution, 8 meters. It is special in its high-resolution strongest multispectral camera among those used in China’s land observation satellites with a range of 800 km. The range of SPOT6 satellite recently launched by France is but 60 km. It has the shortest cycle of 4 days in taking the photographs of a whole area while the cycle for most similar satellites in the world is more than 10 days. We can say Gaofen-1 achieves a perfect combination of high space resolution and high time resolution.
In fact, the Gaofen (high resolution) special project is a very large project of remote sensing technology containing at least 7 satellites from Gaofen-1 to 7. They will all be in service by 2020. Gaofen-1 is a satellite of optical remote-sensed image. So is Gaofen-2 but Gaofen-2 will have twice better full-colar and multispectral resolution of respective 1 and 4 meters. Gaofen-3’s resolution is one meter while Gaofen-4 is a synchronous optical satellite with full-color resolution of 50 meters. Gaofen-5 is equipped with not only a high spectral camera but also the equipment for monitoring the environment and ingredients of atmosphere such as an aerosol monitoring device for measuring PM2.5. Gaofen-6 is similar to Gaofen-1 in loading capacity while Gaofen-7 is a high-resolution 3-dimentional survey and mapping satellite. The series consists of all type of high space, high time and high spectral resolution earth observation systems with full-color, multispectral and high spectral optical and radar survey capabilities on solar and earth synchronous orbits.
In addition, China has separate military reconnaissance satellites with resolution as high as one meter according to speculation.
All the above proves that China is gradually attaining the highest standards in the world in its satellite technology.
Source: huanqiu.com “Foreign military’s speculation on China’s large military satellite project that is striving to be world best” (summary by Chan Kai Yee based on the report in Chinese)