测绘学报

• 学术论文 •    

联合实、复相关函数的干涉SAR图像配准方法

王青松1,瞿继双1,黄海风2,余安喜3,董臻4   

  1. 1. 第二炮兵装备研究院
    2. 国防科技大学电子科学与工程学院
    3. 国防电子科技大学
    4. 国防科技大学四院空间微波探测实验室
  • 收稿日期:2011-05-26 修回日期:2012-06-13 出版日期:2012-08-25 发布日期:2012-08-25
  • 通讯作者: 王青松

A Method Based on Integrating Real and Complex Correlation Function for InSAR Image Coregistration

  • Received:2011-05-26 Revised:2012-06-13 Online:2012-08-25 Published:2012-08-25

摘要: 摘要:SAR复图像配准是干涉SAR数据处理中的关键步骤之一,配准精度直接影响后续产品的质量。本文提出了一种基于联合实、复相关函数的星载干涉SAR图像配准方法。首先,在分析已有配准测度函数各自特性的基础上,结合国际上干涉SAR数据处理经验,得出了在全球干涉测量任务背景下,稳健、普适性的干涉SAR图像配准方法应该以相关函数作为其配准测度函数这一结论。然后,针对相关函数存在实、复相关计算两种,分析了实、复相关函数各自的特点以及适应情况,提出了配准灵敏度准则,从而能够有效地自适应地选取相应的配准相关度量。最后,给出了配准算法的详细实现步骤。复杂地区的实测数据处理结果验证了方法的有效性。

Abstract: Abstract: SAR image coregistration is one of the key steps in InSAR data processing, while the coregistration accuracy can directly affect the quality of follow-up products. This paper presents a method for InSAR image coregistration based on integrating real and complex correlation function. Firstly, based on the analysis of characteristics of the existing coregistration measure function ,and with international SAR data processing experience, it’s concluded that a robust, universal InSAR image coregistration method should take correlation function as its coregistration measure function. Secondly, for the correlation function have two of real and complex correlation calculations, the author analyzed the characteristics and the adaptation of real and complex correlation function, and put forward the concept of coregistration sensitive factor, which can be effectively and adaptively select the appropriate correlation function. Finally, the implementation steps of the coregistration algorithm are given in detail. And the real data processing results show the effectiveness of the proposed coregistration method.