高轨海事卫星与低轨遥感卫星的星间通信链路技术展望

Development of inter-satellite Communication link Between high-orbit maritime Satellite and low-orbit remote Sensing Satellite

对于大多数的低轨道遥感卫星而言,只有在地面站可视范围内才能上传指令和下传数据,单个地面站的可视时间在10分钟以内,难以实现全轨道周期内与地面站的无间断持续性通信。而现有的高轨道海事卫星,具备全球覆盖能力,已经开发了多种地基和空基的数据通信服务。通过开发轻小型智能化的卫星终端,建立起高轨道海事卫星与低轨道遥感卫星之间的双向数据链路,可以大幅度提高低轨道遥感卫星的在轨管理运行效率,缩短应急减灾等快速响应遥感数据回传的滞后时间,具有广泛的商业化应用前景。

For the almost of low earth orbit remote sensing satellites, the upload command and download data could be transported only in the ground station visual zone. It maybe not more than 10 minutes, which could not provide persistent communication links in the whole orbit period. For the high orbit Inmarsat, it could provide globe coverage, and a lot of terrestrial and fir-based data communication services. If the small and smart satellite terminal could be developed, the full-duplex communications links between LEO remote sensing satellite and GEO Inmarsat could be available. So the operation efficiency of on-orbit LEO spacecraft could be boosted, and the end-to-end transmission latency of critical mission data could be shorted, it has a good application prospect.