摘要
针对小卫星地面便携式通信终端的嵌入式编程环境存储量有限的情况 ,介绍了过顶预报算法。该算法在不影响精度的情况下忽略卫星轨道预报算法的高阶摄动项 ,节省了软件存储量 ;同时用改进的搜索算法 ,大大缩短了过顶时间段的搜索时间。该算法的应用使得手持终端减少了能耗 ,缩短了捕获载波频率的时间。
Because of the shortage that the memory in build in program of handle earth communication terminal for micro satellite is very limited, a forecast algorithm of covering time is introduced in this paper. Some high ranked perturbations are neglected to take up less memory while the accuracy is not affected, and the improved algorithm is applied to shorten the search time during the covering. To use this algorithm will decrease the energy consumption of the handle terminal and lessen the time to capture the carrier frequency.
出处
《上海航天》
2002年第5期17-19,38,共4页
Aerospace Shanghai
基金
中科院创新项目
关键词
过顶预报
过顶时间
多普勒频移
小卫星
Covering time
Forecast
Perturbation
Doppler frequency shift
Micro satellite
