卫星遥感数据高频谱效率传输模型及效能分析

提出了遥感卫星高频谱效率数据传输模型，根据遥感卫星高速数据传输链路余量预留较大的特点，充分利用自由空间损耗变化和雨衰预留余量，在满足信道误码率要求条件下，通过信道估计以最大数据传输量为目标实时调整卫星编码调制方案，可较大程度解决目前遥感卫星高速数据传输遇到的硬件资源和频率资源瓶颈问题，适用于各类轨道遥感卫星的星地通信和星星通信，具有较好工程应用价值。通过对多类卫星数据传输场景的效能分析，表明其相对传统低频谱效率技术可明显提高数据传输量。

High Spectral Efficiency Transmission Model and Performance Evaluation for Remote Sensing Satellite

According to the large link margin for high-speed data transmission on remote sensing satellite, an efficient transmission method based on adaptive coding and modulation (ACM) technology for remoting sensing satellite is developed in this paper, which makes the best use of free-space loss and rain attenuation margin to achieve the most dada transmission, for the satellite adjusting the modulation coding scheme(MCS) during the transmission. This method can effectively resolve the bottle-neck about hardware and frequency resource on high-speed data transmission of remote sensing satellite, which can be applied to satellite-satellite and satellite-earth station data transmission for almost all satellites. Finally, the efficiency of ACM for LEO and HEO remote sensing satellite is analyzed, and result proves that ACM is three times as large as CCM about dada transmission.