China's Space Program News Thread
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China launched TXJSSY-9(Telecommunication Technology Testing) satellite with a CZ-3B rocket in Xichang Satellite Launching Center, 00:43 UTC+8, Dec 30, 2021.
This is the 55th launch mission in 2021 and 405th CZ launch.
Missions complete. Goodbye, 2021.
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It's a landscape surveying and mapping satellite. With the name Tianhui-4, it's most probably for civilian purpose. Military satellites were always named Shijian-xx/yy, or TXJSSY-xx/yy.
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escobar
Brigadier
Tianhui are military sat. GF-7 and Ziyuan 3 for civilian use
No. The purpose of Tianhui series are totally civilian.
The text and link below is an introduction for the Tianhui-1 series satelites.
Text above:
Tianhui-1 is the first generation stereo mapping satellite of China, mainly used for scientific research, general investigation for land and resources, surveying and mapping, and other scientific experimental tasks. It's developed by Hangtian Dongfanghong Satelites Co. Ltd., using the CAST2000 Satelite platform by CAST(中国航天科工). The satelite intergrates three types of total 5 cameras, including the 3-line-array CCD camera, 2m-resolution full-color camera and multi-spectrum camera. It's the satelite with the highest effective payload ratio of China by the 2010s. The satelite uses digital data transfer from the satelite to the ground stations instead of camera film reentry method. Tianhui-1 accomplished the same technical level of relative accuracy 12m/6m (plane/elevation 1σ, satelite auto-collecting without ground controls, and after ground system digital data processing) as the US SRTM system do. Tianhui-1 ground processing system is also the first satelite ground application system that integrates data reception, operation management, data production and application services with completely independent intellectual property rights and fully localization of China. The Tianhui-1 series quad satelites were launched between Aug 24, 2010 to Oct 26, 2015.
I think the Tianhui-4 should be the fourth generation of these series satelites.
by78
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High-resolution images from the last launch of 2021. A CZ-3B lofted a communication test satellite into orbit. The satellite was developed by the Fifth Academy of CASC and will be used to validate multi-band high-speed communications technology. This is the 405th launch of the Long March family of rocket.
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