SAR polar format implementation with MATLAB.

Martin, Grant D. ; Doerry, Armin Walter

Sandia National Laboratories

关键词: Image Processing Image Analysis.;    Image Analysis.;    58 Geosciences;    Radar;    Exploration;   

DOI  :  10.2172/877139
RP-ID  :  SAND2005-7413
RP-ID  :  AC04-94AL85000
RP-ID  :  877139

美国|英语

来源: UNT Digital Library

【 摘 要 】

Traditional polar format image formation for Synthetic Aperture Radar (SAR) requires a large amount of processing power and memory in order to accomplish in real-time. These requirements can thus eliminate the possible usage of interpreted language environments such as MATLAB. However, with trapezoidal aperture phase history collection and changes to the traditional polar format algorithm, certain optimizations make MATLAB a possible tool for image formation. Thus, this document's purpose is two-fold. The first outlines a change to the existing Polar Format MATLAB implementation utilizing the Chirp Z-Transform that improves performance and memory usage achieving near realtime results for smaller apertures. The second is the addition of two new possible image formation options that perform a more traditional interpolation style image formation. These options allow the continued exploration of possible interpolation methods for image formation and some preliminary results comparing image quality are given.