摘要
遥感微纳卫星平台姿态测量数据与成像载荷实际姿态误差较大,因此在获得更高图像质量、高精度定量化应用方面面临巨大挑战。通过光学载荷在轨小孔成像的方式对恒星星点观测,以实现光学载荷自标定;通过星敏感器和光学载荷在轨分别对恒星星点观测,以实现光学载荷和星敏感器互标定,可对星敏感器和光学载荷安装误差进行修正。地面和在轨验证表明,典型遥感卫星自标定误差优于0.2″,光学载荷和星敏感器互标定误差优于2″,自标定和互标定可有效地提高光学载荷在轨标定精度。
The attitude measurement data of remote sensing microsatellite platform has a large error with the actual attitude of imaging load.It is faced with great challenges in obtaining higher image quality and highprecision quantitative application.In order to realize the self-calibration of optical load,the constant star point is observed by optical load on orbit small hole imaging.The constant star point is observed by star sensor and optical load in orbit respectively to realize mutual calibration of optical load and star sensor.The installation error of star sensor and optical load can be corrected.Ground and in orbit verification show that,the self-calibration error of typical remote sensing satellite is better than 0.2″,and the cross calibration error of optical load and star sensor is better than 2″.Self-calibration and mutual calibration can effectively improve the in orbit calibration accuracy of optical load.
作者
崔阳
陈雪笛
姚小松
赵笙罡
王文川
王秋苹
马慧
李良成
潘超
王炳甲
CUI Yang;CHEN Xuedi;YAO Xiaosong;ZHAO Shenggang;WANG Wenchuan;WANG Qiuping;MA Hui;LI Liangcheng;PAN Chao;WANG Bingjia(Innovation Academy for Microsatellites for Chinese Academy of Sciences,Shanghai 201210,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China)
出处
《南京航空航天大学学报》
CAS
CSCD
北大核心
2022年第3期499-507,共9页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家重点研发计划(2017YFB0502902)。
关键词
遥感
微纳卫星
星敏感器
自标定
互标定
remote sensing
microsatellite
star sensor
self-calibration
intercalibration
