第23卷第7期 2015年7月
文章编号
1004-924X(2015)07-1813-09
光学精密工程
Optics and Precision Engineering
Vol.23No.7
Jul.2015
星载太阳辐射监测仪的太阳程控跟踪精度
杨东军，方伟*，叶新，宋宝奇
（中国科学院长春光学精密机械与物理研究所，吉林长春130033）
摘要：为了避免太阳敏感器(DSS)指向故障导致星载太阳辐射监测仪(SIM)功能失效，为风云三号(FY-3(03))卫星的太阳辐射监测仪(SIM)设计了备份跟踪方式程控太阳跟踪并分析了其跟踪精度。利用星上儒略日时间和卫星轨道瞬根，基于类基准地表辐射网(BSRN)算法推导了轨道坐标系太阳失量、俯仰角和偏航角。将计算结果与卫星给定指向数据进行了比较。结果表明：太阳矢量三轴偏差均小于0.1°，俯仰角平均偏差为0.0246°，偏航角平均偏差为一0.0804°。对利
制精度优于0.05°。为保证在轨跟踪精度，试验了俯仰零点角和偏航零点角，其分别为80.46"和一36.96°。最终分析结果表明，俯仰程控跟踪不确定度为士0.318"，偏航程控跟踪不确定度为士0.316°，满足SIM太阳跟踪精度士0.5°的要求。
设计的太阳程控跟踪降低了SIM对光学指向器件的依赖，提高了在轨太阳跟踪的可靠性。关键调：星载太阳辐射监测仅；太陷奕量，太阳跟踪，太阳同步轨道；太阳总辐照度
中图分类号：P111.41;TP732
文献标识码：A
doi;10.3788/OPE.20152307.1813
Program-controlled sun-tracking precision of
spacebornesolarirradiancemonitor YANG Dong-jun,FANG Wei',YE Xin,SONGBao-qi
(Changchun Institute of Optices,FineMechanics and Physics, ChineseAcademy ofSciences,Changchun130033,China)*Correspondingauthor,E-mail:fangw@ciomp.ac.cn
Abstract:To avoid the function failure of a solar irradiance monitor (SIM) caused by the pointing faults of the Digital Sun Sensor(DSS), the program-controlled sun-tracking of SIM on the FY-3(o3) satellite was explored as the backup sun-tracking, and its precision was analyzed. By using the Julian day time and the satellite orbital parameters, the sun vector in orbital coordinate system, pitch angle and the yaw angle were deduced on the basis of Baseline Surface Radiation Network(BSRN)-like algo-rithmThecalculated resultswere compared to that of the satellite-given sun-pointing data,it shows that the sun vector deviations in three axes are all less than O. 1°, and the average deviations of pitch angle and yaw angle are 0.024 6°and -0. 080 4°respectively..Using the program-calibrated sun pointing data of many orbits, a sun-tracking control simulation experiment was carried out, and the results show that the pitch tracking control precision is better than O. 1°, and the yaw tracking control
收稿日期：2015-02-13；修订日期：2015-04-24
基金项目：国家自然科学基金科学仪器基础研究专项基金资助项目（No.41227003）