船载卫星电视/遥感接收系统

Shipboard Satellite TV and Remote Sensing Receiving System

为了获取全球卫星遥感数据进行科学研究,并利用遥感数据进行气象预报,提高远洋船的航行安全;同时,为了丰富船员的业余文化生活,研制了船载卫星电视/遥感接收系统(shipboard satellite TV and remote sensingreceiving system,SSTV-RSRS)。系统采用二轴稳定平台加二轴伺服的稳定方案。二轴稳定平台克服船的摇摆对跟踪的影响;二轴天线系统精确跟踪极轨卫星和同步卫星,完成船载条件下的遥感数据接收和卫星电视接收。双GPS姿态测量系统及辅助的精密电罗经提供航向信息,由天线控制单元提供补偿,解决舰船的航向变化对轨道跟踪的影响。采用轨道预报程序跟踪加步进跟踪方案。使用结果表明:该系统可接收处理美国NOAA、ORBVIEW和中国FENGYUN等极轨卫星的适时遥感数据。在不接收遥感数据时,自动接收卫星电视。三年多实际使用证明,该系统效果良好。

A shipboard satellite TV and remote sensing receiving system （SSTV/RSRS） is developed to acquire global remote sensing data for scientific study and weather forecast to increase the ocean voyage safety, and to enrich the entertainment of ship＇s crew. The system adopts stability scheme of two-axis stability platform and two-axis servo. The two-axis stability platform overcomes the impacts of ship swing. Two-axis antenna system implements the accurate tracking of the antenna to polar orbit satellites or geostationary satellites, and the receiving of remote sensing data or satellite TV programs. Using dual GPS attitude measurement system and auxiliary precision gyrocompass provided the course information. The ship orientation is compensated by antenna control unit. The influence of ship orientation change on orbit tracking is solved. Use tracking scheme of orbit prediction-based step-track. The system has been used for 3 years on a ship The results show that the system can receive and process the remote sensing data of polar orbit satellites such as US NOAA, ORBVIEW and Chinese FENGYUN, etc. When a polar orbit pass is over, it receives TV signals from geostationary satellite automatically.