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遥感技术与应用  2023, Vol. 38 Issue (4): 827-834    DOI: 10.11873/j.issn.1004-0323.2023.4.0827
宽波段多光谱数据立方专栏     
国产高分辨率卫星月球观测影像几何纠正方法
贾益(),白杨(),钟兴,邹波,杨松
长光卫星技术股份有限公司,吉林 长春 130000
Geometric Correction Method of Lunar Observation Image by High Resolution Satellite Made in China
Yi JIA(),Yang BAI(),Xing ZHONG,Bo ZOU,Song YANG
Chang Guang Satellite Technology Co. ,Ltd,Changchun 130000,China
 全文: PDF(2722 KB)   HTML
摘要:

通过对地卫星连续进行月球观测已成为星载遥感仪器辐射定标和验证的一种新方法,而统一的几何信息对于利用月球观测数据进行辐射定标具有重要参考价值。对地卫星获取的月球影像,获取的拍摄时刻的位置与姿态是相对于地球的,要换算到相对于月球的位置姿态信息,由于卫星的翻转拍摄,会使各参数偏离地面的定标值,几何纠正精度不高。针对对地卫星获取的月球影像几何纠正困难的问题,以吉林一号光谱星为例,提出一种基于迭代匹配实现月球影像几何纠正的方法,通过迭代匹配提高影像的几何纠正精度,并考虑半月月球影像的处理。实验表明:该方法能够解决无法直接进行地理信息解算的对地卫星获取的月球观测影像的几何纠正,并且几何纠正精度较高。

关键词: 吉林一号光谱星月球影像迭代匹配几何纠正    
Abstract:

It has become a new method for radiometric calibration and verification of satellite-borne remote sensing instruments by continuously observe the moon whit the earth satellite, unified geometric information of lunar observation data has important reference for radiometric calibration. The position and attitude of the moon image acquired by the earth satellite are relative to the earth at the time of taking the image,due to the inversion shooting of the satellite, each parameter will deviate from the calibration value of the ground, and the geometric correction accuracy is not high.In order to solve the difficulty of geometric correction of lunar images acquired by earth satellites, take the Jilin1-GP as a sample, a method of lunar image geometric correction based on iterative matching is presented to improve the geometric correction accuracy of the image in this paper, and consider the processing of halfmoon image. Experimental results show that this method can solve the geometric correction of lunar observation images obtained by earth satellites which cannot be solved directly, and the geometric correction accuracy is high.

Key words: Jilin1-GP    Images of the moon    Iterative matching    Geometric correction
收稿日期: 2022-07-21 出版日期: 2023-09-11
ZTFLH:  TP75  
基金资助: 国家重点研发计划“国产中高分辨率宽波段多光谱卫星数据集构建和高效国际化服务”(2019YFE0127000)
通讯作者: 白杨     E-mail: 13843138048@163.com;baiy776@163.com
作者简介: 贾 益(1991—),女,辽宁大连人,硕士研究生,主要从事卫星、无人机摄影测量理论和应用研究。E?mail:13843138048@163.com
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引用本文:

贾益,白杨,钟兴,邹波,杨松. 国产高分辨率卫星月球观测影像几何纠正方法[J]. 遥感技术与应用, 2023, 38(4): 827-834.

Yi JIA,Yang BAI,Xing ZHONG,Bo ZOU,Song YANG. Geometric Correction Method of Lunar Observation Image by High Resolution Satellite Made in China. Remote Sensing Technology and Application, 2023, 38(4): 827-834.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2023.4.0827        http://www.rsta.ac.cn/CN/Y2023/V38/I4/827

图1  月球观测影像与参考影像
图2  月球观测影像几何纠正流程
图3  月球影像圆心半径解算示意图
图4  月球影像中心投影参考影像
图5  纠正后的月球影像的地理信息赋值给未纠正月球影像
图6  吉林一号光谱02星月球观测影像
图7  原始月球影像与参考影像叠加显示示意图
实验数据

检查点

/个

mdx

(pixel)

mdy

(pixel)

mdxy

(pixel)

数据1480.930.250.96
数据2151.320.291.36
表 1  几何纠正精度
图8  几何纠正影像检查点分布图
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