摘要
针对空间遥感相机挠性支撑扫描系统的测角精度标定问题,利用高精度经纬仪测量扫描镜摆动过程中采集的角度误差数据,研究了适用于空间复杂环境的分段误差补偿方法。利用光电自准直仪对扫描镜的零位进行监测,以解决经纬仪随时间、环境引起的零位漂移。根据高轨应用需求,分析了分段误差补偿法的必要性。将获得角度误差引入补偿系统,采用分段误差补偿法对测角电路进行标定。将测试结果与谐波误差补偿法标定结果对比,验证了分段误差补偿后系统的测角精度能够满足系统性能指标要求。最终确定了分段误差补偿法在空间遥感相机有限角度扫描系统高测角精度实现过程中的有效性。
To calibrate the angle measurement accuracy for space camera scanning system supported with flexible pivots,the segmented error compensation method applicable to complex space environment was studied using the angle error data collected from theodolite. Using the photoelectric autocollimator, the zero-angle position of the scanning mirror was monitored, and the measurement shifts with time and environment were determined. According to requirements in high orbit application,it is necessary to use the segmented error compensation method. Taking the angular errors as the input of the compensation system, the angle measurement circuit was calibrated using segmented error compensation method. Then, comparing the test results with those obtained by harmonic error compensation methods, one can find that the angle measurement accuracy after segmented error compensation can satisfy the system performance requirement. Therefore,the validity of the segmented error compensation method is confirmed to achieve high accuracy angle measurement for space camera in limited-angle scanning.
作者
迟冬南
徐丽娜
赵鑫
张秀茜
贾慧丽
CHI Dongnan;XU Lina;ZHAO Xin;ZHANG Xiuqian;JIA Huili(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)
出处
《航天返回与遥感》
CSCD
2018年第5期89-95,共7页
Spacecraft Recovery & Remote Sensing
关键词
扫描装置
测角误差测量
标定方法
空间相机
scanning equipment
angle accuracy measurement
calibration method
space camera
