基于激光测量原理及微纳相机特征, 提出了一种新的微纳遥感相机在轨指向标定方法.该方法采用光路复用和焦面复用技术, 实现了标定装置与相机系统的一体化光机电集成,可对每景遥感影像进行实时标定.将某新型微纳遥感相机作为仿真验证平台, 对本文提出的微纳遥感相机在轨指向标定方法进行验证.仿真结果显示, 使用该方法微纳遥感相机自身光轴指向标定精度不超过0.2″, 满足相机影像无控制点下平面定位精度30 m的指标要求.原理样机的研制及标定结果进一步证明了该项技术的原理与实践的可行性.该技术具有提升微纳遥感卫星定量化应用的价值.

Based on the principle of laser measurement and the characteristics of micronano cameras, a new inorbit pointing calibration method for micronano remote sensing cameras are investigated. This method adopts optical path and focal plane multiplexing technology to realize integration of calibration device and camera system. Through this method, realtime calibration on each scene remote sensing image becomes possible. This paper verifies this new method of inorbit pointing calibration using one new micronano remote sensing camera. Simulation results show that the optical axis pointing calibration accuracy does not exceed 0.2″, which satisfies the requirements of the camera image, controlling the plane positioning accuracy within 30 m. Through the preparation and calibration results of principle prototype, the principle and practical feasibility of this method are further proved. This method can help improving the quantitative application value of micronano remote sensing satellites.