地球敏感器月球自主干扰保护异常分析及对策

针对某同步三轴稳定卫星地球敏感器自主干扰保护异常的问题,分析了地球敏感器受月球干扰的机理,详细比较了地面与星载月球干扰预报算法,挖掘比对了星载干扰保护软件数据,通过分析遥测数据及事后地面仿真计算软件处理验证,对异常点进行了准确定位,得出了星载月球干扰预报算法的局限性会导致卫星自主干扰保护异常的结论。并在此基础上,提出了在轨卫星地球敏感器受月球干扰自主保护异常时的处置对策,对后续同平台卫星相关设计提出了修改建议。

Analysis of Autonomous Protection Anomalies of Earth Sensors against Moon Interference and Solutions

Reasons for an autonomous moon interference protection anomaly are discussed in this paper. The mechanism of the earth sensor interference by the moon on a 3-axis Geostationary Earth Orbit(GEO) satellite is analyzed. A conclusion is drawn that the autonomous moon interference protection anomaly is due to the limitation of the on-board prediction algorithm through comparison of the difference of prediction algorithm between the on-board computer and ground center, analysis of telemetry data and downloading of on-board interference prediction software, and verification by ground simulation. A method is provided for correction of autonomous protection anomaly. The results of the research are of high value to modification of the autonomous prediction algorithm for the same series satellites