遥感卫星光学载荷对月定标成像参数系统级分析方法

System-level Analysis Method for Imaging Parameters of Lunar Calibration for Optical Payload on Remote Sensing Satellite

遥感卫星采用对月成像的在轨辐射定标方法可以避免大气层对定标精度产生影响,并提高定标频次。文章针对遥感卫星在对月定标任务中光学载荷对成像参数的分析需求,提出了一种综合考虑卫星技术状态、姿态机动策略并基于饱和电压和信噪比进行联合评估的对月定标成像参数系统级分析方法。基于高分七号卫星的技术状态对方法进行仿真验证,结果表明:该方法适用于获取遥感卫星光学载荷对月定标任务中的成像参数,能提高对月成像时的图像质量。

Lunar calibration of remote sensing satellites can avoid the influence of the earth atmosphere and increase the calibration frequency.In this paper,a system-level analysis method for imaging parameters of lunar calibration for optical payload on remote sensing satellite is proposed.The technical state and attitude maneuver strategy of satellite are comprehensively considered and a joint assessment of saturation voltage and signal-to-noise-ratio is implemented.Simulations are carried out based on the technical status of GF-7 satellite.The results show that the proposed method can obtain the imaging parameters for the lunar calibration of a remote sensing satellite and can improve the image quality for the lunar calibration.