卫星平台震颤影像的去模糊方法Imagedeblurringmethodforsatellite.PDF

第38 卷第Z1 期 通 信 学 报 Vol.38 No.Z1 2017 年10 月 Journal on Communications October 2017 doi:10.11959/j.issn.1000-436x.2017252 卫星平台震颤影像的去模糊方法 宋晓林，方忠浩，潘俊 （武汉大学测绘遥感信息工程国家重点实验室，武汉湖北 430079 ） 摘 要：TDI CCD 相机凭借其多级积分的成像特点，已成为目前高分辨率光学遥感器成像系统的主流传感器，但 在其成像过程中，若存在平台震颤，会造成图像的模糊，影响成像质量。首先，从TDI CCD 相机的成像原理入 手，分析了平台震颤对成像质量的影响，并根据震颤检测得到的震颤像移轨迹，提出一种震颤影像去模糊方法， 以消除震颤引起的图像退化，最后，利用资源三号多光谱影像进行了实验。实验结果表明，经该方法处理后的震 颤影像，图像的各项定量评价指标显著提升，从而验证了方法的有效性。 关键词：TDI CCD 相机；平台震颤；像移；去模糊 中图分类号：P236 文献标识码：A Image deblurring method for satellite platform caused by jitter SONG Xiao-lin, FANG Zhong-hao, PAN Jun (State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China) Abstract: TDI CCD camera with its multi-level integral imaging features has become the mainstream sensor of current high-resolution optical remote sensor imaging system, but if there is platform tremor in its imaging process, it will pro- duce images blur, affecting image quality. The influence of platform tremor on imaging quality based on the imaging principle of TDI CCD camera was analyzed. According to the jitter image trajectory obtained by jitter detection, a method was proposed to eliminate image degradation caused by jitter. ZY-3 multi-spectral images were experimented. The expe- rimental results show that the quantitative evaluation index of the image after the jitter image is improved, and the validi- ty of the method is verified. Key words: TDI CCD camera, platform jitter, image shift, deblurring