摘要
天链一号数据中继卫星在轨成功运行,标志着我国在天基信息传输领域的重大突破,今后发展方向是建设中继卫星组网系统,以满足数据中继不断增长的需求。分析表明:经度间距约为180°的地球静止轨道(GEO)双星组网系统,只需在我国本土设立控管站,利用地面高速光纤干线,双星就能对离地高度大于95km的航天器实现100%轨道覆盖的中继卫星系统。这比较符合我国国情,并具有完好的技术继承性和后续拓展前景。
The successful in orbit operation of the China＇s first data relay satellite Tianlian-1 makes breakthrough in the field of space-based information transfer. The reasonable next step for China is to establish a space network in order to fill the continuous growth of demands. Benefi- ting from the existing ground optical fiber infrastructure, a system of two GEO data relay satellites with about 180° longitude difference between them would be a suitable way in China＇s condition. It need build the control earth stations only on the China＇s territory and can offer 100% orbit coverage for LEO/MEO user spacecraft whose altitudes are higher than 95km. It has good technical heritage and broad prospect.
出处
《航天器工程》
2011年第2期1-8,共8页
Spacecraft Engineering
关键词
数据中继卫星
卫星组网
系统工程
总体技术
data relay satellite
satellite constellation
system engineering
system design tech- nology
