光子学报, 2019, 48 (9): 0912001, 网络出版: 2019-10-12
微纳遥感相机在轨光轴指向标定方法
Method for Inorbit Optical Axis Pointing Calibration of Micronano Remote Sensing Camera
微纳遥感相机 在轨指向精度 实时标定 一体化 定量化应用 光路复用 焦面复用 Micronano remote sensing camera Pointing accuracy inorbit Realtime calibration Integration Quantitative application Optical path multiplexing Focal plane multiplexing
摘要
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.
Abstract
Based on the principle of laser measurement and the characteristics of micronano cameras, a new inorbit pointing calibration method for micronano 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, realtime calibration on each scene remote sensing image becomes possible. This paper verifies this new method of inorbit pointing calibration using one new micronano 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 micronano remote sensing satellites.
吴俊, 李娜, 岳春宇, 蒙裴贝, 丁锴铖, 姜宏佳, 李瀛搏. 微纳遥感相机在轨光轴指向标定方法[J]. 光子学报, 2019, 48(9): 0912001. WU Jun, LI Na, YUE Chunyu, MENG Peibei, DING Kaicheng, JIANG Hongjia, LI Yingbo. Method for Inorbit Optical Axis Pointing Calibration of Micronano Remote Sensing Camera[J]. ACTA PHOTONICA SINICA, 2019, 48(9): 0912001.