干涉合成口徑雷達影像套合

Abstract

本篇論文主要是介紹兩種擴充自相關係數函數概念的影像套合之新方法， 此外，為了提高影像套合的準確度，引進了內差的數值方法。在這篇論文 裡探討了針對不同的地表起伏，不同的內差方式配合這篇論文提出的影像 套合方法所得到的一些結果。在對於影像套合方法裡所需要搜尋視窗的大 小，這□也有簡單的介紹。利用套合所得到兩張影像控制點的位移量，我 們可以求出兩張完整影像的對映函數，進而更進一步依對映函數的關係對 影像作重新取樣，已求得最後的相位圖。 An extension to the basic concept of correlation detection as a means of INSARimage registration is developed. To achieve sub- pixel accuracy, analysis approaches with different interpolation methods in different terrain relief are proposed. Numerical results from the process of some selected tie points in the INSAR image are included and compared. Then an appropriate mapping function is generated for the whole INSAR image. A sub- pixel resampled image is acquired by using a bilinear interpolation. Finally, conclusions are given to the determination of suitable process method on certain terrain relief.