基于线加速度计的高分辨率光学影像颤振检测与重建方法  

Jitter detection and reconstruction method for high-resolution optical satellite images using linear accelerometer

作　　者：范城城[1] 王密[1] 金淑英[1] 潘俊[1] 王艳[2] 张彪 FAN Chengcheng;WANG Yan;ZHANG Biao;WANG Mi;JIN Shuying;PAN Jun(State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;Institute of Beijing Remote Sensing Information, Beijing 100192 , 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]北京市遥感信息研究所,北京100192

出　　处：《国防科技大学学报》2017年第5期145-149,共5页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(41371430;91438112;91438203;91438111;40901209);国家重点基础研究发展计划资助项目(2014CB744201;012CB719902;2012CB719901)

摘　　要：卫星平台颤振条件下,推扫式高分辨率光学影像成像往往产生扭曲,从而影响影像的定位及信息提取精度。针对当前颤振下影像成像扭曲补偿的问题,提出一种基于线加速度计测量平台颤振下的稳态重成像模型实现高分辨率卫星颤振扭曲影像的重建。采用受平台颤振影响而扭曲变形的高分某型号卫星全色影像数据进行验证。分析结果表明:提出的线加速度计可以有效检测并测量出平台的颤振,设计的颤振影像地面重建模型可以有效提高光学影像成像质量,补偿后影像扭曲变形现象明显消除。Under the condition of satellite platform^jitter,the push-broom high-resolution optical imaging often produces distortion,which affects the accuracy of the image positioning and information extraction.According to the critical compensation issue for distorted images,a steady-state imaging model with the linear accelerometer directly measuring platform jitter was proposed to achieve reconstruction of high-resolution distorted images.The effectiveness was validated by using the distorted panchromatic image of a high-resolution satellite affected by platform jitter.The analysis results show that the linear accelerometer can effectively detect and measure the platform jitter,the designed on-ground reconstruction model of jitter image can effectively improve the distorted imaging of push-broom optical image caused by platform jitter,and the jitter image's distortion phenomenon can be obviously eliminated.

关 键 词：高分辨率光学卫星 颤振检测 颤振补偿 线加速度计 稳态重成像模型 

分 类 号：P236[天文地球—摄影测量与遥感]