| 星载SAR复数图像的配准 |
| |
| 引用本文： | 刘国祥,丁晓利,李志林,陈永奇,章国宝.星载SAR复数图像的配准[J].测绘学报,2001,30(1):60-66. |
| |
| 作者姓名： | 刘国祥 丁晓利 李志林 陈永奇 章国宝 |
| |
| 作者单位： | 香港理工大学 土地测量与地理资讯学系，香港 |
| |
| 基金项目： | 香港理工大学研究设备基金(G-9025)；香港理工大学研究基金(G-V747) |
| |
| 摘 要： | 星载干涉雷达测量已经被证实用于生成大范围（乃至全球）的DEM或监测地表位移具有广阔的应用前景，其中SAR复数图像序列的精确配准是保证生成有效干涉相位图的重要环节之一。本文分析了卫星InSAR系统中所涉及的几种坐标系统变换问题，并提出了基于此的几何配准方案，即基于卫星轨道状态矢量、SAR成像几何进行配准的算法；同时，还设计了基于几何配准结果和能量影像相关技术的配准算法，最后使用ERS－1／2、JERS－1和RADARSAT卫星获取的3种SAR复数图像对分别做几何配准和相关配准试验和比较，并对卫星SAR图像质量和轨道数据质量作了定性分析。
|
| 关 键 词： | SAR复数图像 几何配准 相关配准 雷达干涉测量 干涉处理 坐标系 |
| 文章编号： | 1001-1595(2001)01-0060-07 |
Co-Registration of Satellite SAR Complex Images |
| |
| LIU Guo-xiang,DING Xiao-li,LI Zhi-lin,CHEN Yong-qi,ZHANG Guo-bao.Co-Registration of Satellite SAR Complex Images[J].Acta Geodaetica et Cartographica Sinica,2001,30(1):60-66. |
| |
| Authors: | LIU Guo-xiang DING Xiao-li LI Zhi-lin CHEN Yong-qi ZHANG Guo-bao |
| |
| Abstract: | Spaceborne Synthetic Aperture Radar Interferometry (InSAR) and Differential InSAR (DInSAR) have been demonstrated to be the very potential tools for generating large-area even or global DEM as well as measuring and monitoring Earth surface deformation, respectively. For the purpose of computing the accurate interferogram, the co-registration of satellite SAR complex images is one of the most important processing procedures involved in satellite SAR interferometry. Based on the discussion about transformations among several spatial coordinate systems associated with interferometric processes, this paper proposes the geometric co-registration scheme of SAR images depending on satellite orbit state vectors and SAR imaging geometry. On the other hand, the correlative co-registration algorithm that makes full use of amplitude information of image chips is also designed on the basis of initial results of geometric co-registration. Finally, the co-registration experiments are carried out using three types of complex SAR image pairs that were collected by ERS-1/2, JERS-1, and RADARSAT, respectively. Some significant comparisons and analyses are made. |
| |
| Keywords: | SAR complex image geometric co-registration correlative co-registration radar interferometry |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
