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Shijian-18 was a Chinese communications and technology demonstration satellite developed and launched by the China Academy of Space Technology on 2 July 2017. It was the maiden flight of the DHF-5 satellite bus, which is designed with 16-year lifespan. Shijian-18 carried 18 experiments on board involving communications and space telescopes.
Two derivative models, the Shijian-8 (SJ-8) and Shijian-10 (SJ-10), were developed and launched as 'seed satellites' conducting bioastronautic experiments for the Chinese Ministry of Agriculture. All FSW-series satellites were launched into orbit using Long March rockets from the Jiuquan Satellite Launch Center .
The third satellite of the Tongxin Jishu Shiyan program, TJS-3, is still largely shrouded in secrecy with observers unable to determine if the satellite performs an early warning or signals intelligence mission. [17] Said to have only had one payload aboard during its 2018 launch, observers detected a secondary object separate from TJS-3 in orbit.
Initially known as Shijian 13 (SJ 13), the satellite was launched on 12 April 2017 at 11:04:04 UTC into geostationary transfer orbit using a Long March 3B/E launch vehicle. As the Shijian designation suggests, it is an experimental satellite that is supposed to test the electric propulsion of the DFH-4S satellite bus.
Shiyan 7 was launched from Taiyuan Satellite Launch Center (TSLC) on 19 July 2013 aboard a Launch March 4C rocket into low Earth, Sun-synchronous orbit, accompanied by the Shijian 15 (of unknown mission) and Chuangxin 3.
S-TADIL J, or Satellite TADIL J, is a real-time Beyond Line-of-Sight Tactical Digital Information Link (TADIL) supporting the exchange of the same J Series message set that is implemented on Link-16 via the Joint Tactical Information Distribution System (JTIDS).
Tianyan-2 (天眼二号; Tiānyǎn èr hào), alternatively known as Xingshidai-8 (星时代八号; Xīng Shídài bā hào; 'Star Age 8'), is a commercial Chinese 6U CubeSat reconnaissance satellite bearing both a low-resolution Earth video-imager launched.
TDRS-10, known before launch as TDRS-J, is an American communications satellite which is operated by NASA as part of the Tracking and Data Relay Satellite System.It was constructed by the Boeing Satellite Development Center, formerly Hughes Space and Communications, and is based on the BSS-601 satellite bus. [3]