高分六号高分辨率相机在轨几何定标方法与精度验证  

On-Orbit Geometric Calibration Method and Accuracy Verification of High-Resolution Camera of Gaofen 6

作　　者：薛麟 张致齐 郭贝贝 程宇峰[1] XUE Lin;ZHANG Zhiqi;GUO Beibei;CHENG Yufeng(State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;School of Computer Science,Hubei University of Technology,Wuhan 430060,China)

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]湖北工业大学计算机学院,湖北武汉430060

出　　处：《测绘地理信息》2022年第3期113-118,共6页Journal of Geomatics

基　　金：国家自然科学基金(91838303);国家自然科学青年基金(61901307)。

摘　　要：结合高分六号高分辨率相机的成像特点与几何特性,提出了一套适用于高分相机的在轨几何定标流程,选取两景定标影像进行定标参数的求解,并选取多个测试景对定标参数进行验证。结果表明,绝对定标景定标后绝对定位精度优于2.5 m,相对定位精度优于1个全色像素,相对定标景定标后波段配准精度均优于0.3个多光谱像素。过滤样本中的奇异值后,测试景绝对定位精度均值优于15 m,相对定位精度均值优于1.5个全色像素,波段配准精度均值优于0.3个多光谱像素。Based on the imaging characteristics and geometric characteristics of high-resolution cameras,we propose a set of on-orbit geometric calibration process for high-resolution cameras. Double images are selected to solve the calibration parameters,and several test scenes are selected to verify the calibration parameters. The results show that the absolute positioning accuracy of absolute calibration image is better than2. 5 m,the relative positioning accuracy is better than panchromatic 1 panchromatic pixel,and the band registration accuracy of relative calibration image is better than 0. 3 multispectral pixels. After filtering the singular values in the sample,the mean absolute positioning accuracy of test image is better than15 m,the mean relative positioning accuracy is better than 1. 5panchromatic pixels,and the mean band registration accuracy is better than 0. 3 multispectral pixels.

关 键 词：高分六号 高分相机 在轨几何定标 定位精度 配准精度 

分 类 号：P228[天文地球—大地测量学与测量工程] TP751[天文地球—测绘科学与技术]