论文部分内容阅读
星敏感器以星体映射在CCD像平面上的坐标作为输入信号,信号精度受到光学系统固有误差与CCD像平面安装误差的综合影响。基于恒星参考系的星敏感器光学系统标定与引建方法,无需转台与星模拟器等大型昂贵设备支撑,以天体信标于观测历元时的精确赤道坐标为基础依据,创新性地将星敏感器不可回避的CCD像平面安装误差问题,糅合至光学系统标定过程进行解决,应用简单、方便,经试验验证:标定与引建精度能够达到角秒量级。
The star sensor takes the coordinates of the satellite image mapped on the CCD image plane as the input signal, and the signal precision is affected by the inherent error of the optical system and the installation error of the CCD image plane. The method of star sensor optical system calibration and guidance based on stellar reference system is based on the accurate equatorial coordinate of celestial beacon during observation epoch without need of large and expensive equipment such as turntable and star simulator. Sensor unavoidable CCD image plane mounting error, blend into the optical system calibration process to solve, the application is simple, convenient, verified by the test: calibration and build accuracy can reach the order of magnitude seconds.