摆动式扫描红外地球敏感器在轨探头级备份工作研究

On Bolometer Detector Redundancy of Swing Infraed Earth Sensor

针对摆动式扫描红外地球敏感器两个探测器工作时输出弦宽信息的特点以及现役通信卫星的一般配置,提出了使用两个探测器信息进行姿态确定及利用双份地球敏感器进行探头级备份工作的方法,该方法在工程实现上简单易行,实现精度较高,且提高了在轨卫星地球敏感器的使用可靠性及冗余度.

For a swing infrared earth sensor （IRES） , the characteristics of the chord information from each single channel are given when only two bolometer detectors work. An attitude determination method is proposed using the chord information of the two bolometer detectors, and the bolometer detector redun dancy is also discussed. The simulation and experimental results indicate that the attitude determination method is very simple and practicable in engineering application. Meanwhile, the detector redundancy im proves the reliability of the IRES.