摘要
提出了一种基于GPS实时轨道预报计算星地激光通信载荷预对准方位俯仰角度的算法。算法考虑了卫星在轨运动过程中卫星姿态的变化及星地载荷安装角度的影响。对算法进行了软件仿真,给出了卫星经过地面站过程中星地载荷方位俯仰角度随时间变化曲线。利用专业星地链路分析软件STK(satellite tool kit)完成了算法的对比验证,对验证结果进行了分析,结果表明,算法能够准确计算星地载荷方位俯仰指向角度,与STK软件计算结果一致,具有很高的实时性与准确度。
An algorithm to calculate the payload pre-aligned azimuth and elevation angles in the satellite-to-ground laser communications is proposed based on real-time GPS orbit prediction. The influence of the continuing change of satellite attitude and the payload installation angle is taken into account by the algorithm during exercise. The software simulation is conducted for the algorithm, giving out the curve of payloads＆#39; azimuth and elevation angle change over time when the satellite passes the ground station. And the professional satellite to ground link analysis software STK is used to complete the comparison and validation, the results are analyzed which shows that this algorithm can accurately calculate the azimuth and elevation angles, and calculation results are consistent with those from STK software, having good real-time and accuracy.
出处
《电子技术（上海）》
2014年第6期90-95,82,共7页
Electronic Technology
基金
空间尺度量子实验关键技术研究与验证试验(中国科学院知识创新工程重大项目
KGCX1YW-16)
关键词
激光通信
方位俯仰角
STK
laser communication
Azimuth and elevation angles
STK
