Two dimension chirp-Z transform for polar format imaging algorithm

Tang Yu, Xing Meng-dao
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引用次数: 4

Abstract

Spotlight SAR is an efficiency way to obtain high resolution radar imagery. The classic polar format algorithm (PFA) is the widely used method for spotlight SAR imagery reconstruction, but PFA need two dimension interpolation operation in SAR imaging, which has influence on the imaging precision and computation efficiency. This paper presents a novel polar format Algorithm based on two dimension CZT transform, which may avoid the interpolation operation to improve on imaging precision and computation efficiency.
极坐标格式成像的二维chirp-Z变换算法
聚光SAR是一种获取高分辨率雷达图像的有效方法。经典极坐标格式算法(PFA)是目前广泛应用的聚束SAR图像重建方法,但在SAR成像中需要进行二维插值运算,影响了成像精度和计算效率。提出了一种新的基于二维CZT变换的极坐标格式算法,避免了插值运算,提高了成像精度和计算效率。
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