欢迎访问中国科学院大学学报,今天是

中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (3): 380-386.DOI: 10.7523/j.issn.1002-1175.2013.03.016

• 信息与电子科学 • 上一篇    下一篇

干涉SAR图像数据压缩

张清娟1,2, 李道京1   

  1. 1. 中国科学院电子学研究所微波成像技术国家重点实验室, 北京 100190;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2012-05-02 修回日期:2012-05-22 发布日期:2013-05-15
  • 通讯作者: 张清娟, qingjuan0535@163.com
  • 基金资助:

    国家"973"计划(2009CB72400)资助 

InSAR image data compression

ZHANG Qing-Juan1,2, LI Dao-Jing1   

  1. 1. National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-05-02 Revised:2012-05-22 Published:2013-05-15

摘要:

研究干涉SAR图像数据压缩问题,提出将干涉SAR的数据压缩转化为一个幅度图像的压缩和一个干涉相位图的压缩. 设计机上信号处理流程,给出基于DCT和DWT的2种机上数据压缩方法,并对其数据压缩性能进行分析. 针对相干斑对干涉相位影响较大的问题,在对干涉相位图进行压缩前,插入回转中值滤波. 不同信噪比下干涉SAR仿真数据和实际数据的处理结果,表明了本文方法的有效性.

关键词: 干涉SAR, 图像数据, 数据压缩, 回转中值滤波, 误差分析

Abstract:

The compression problem of InSAR image data is investigated. A new InSAR data compression method is presented, and it consists of an amplitude image compression and an interferogram compression. We provide the signal processing flow and two data compression methods on board which are based on DCT and DWT, respectively. The compression performance of InSAR image data is analyzed. In order to reject the speckles impact on interferogram, the pivoting median filter is applied before the interferogram is compressed. The processing results of real data and simulation data under different signal-to-noise ratios show the validity of our method.

Key words: InSAR, image data, data compression, pivoting median filter, error analysis

中图分类号: