基于改进的扩展波数域算法的SAR实时成像方法

Method of real-time SAR processing based on extended wavenumber domain algorithm

波数域算法是一种精确的成像算法,但因其运算量较大而不能直接用于实时成像。文章在研究波数域算法和高精度运动补偿技术的基础上,提出了一种内嵌实时运动补偿方法的改进扩展波数域实时成像算法。与传统的扩展波数域算法相比,该算法具有更低的计算复杂度。最后通过点目标仿真进行了验证,结果表明,本方法能够用于斜视下的高分辨率SAR实时成像。

Wavenumber domain algorithm is a high precision SAR image algorithm,but it can not use for real-time SAR processing due to it has high compute complexity.This paper proposes a new approach combines two-steps motion compensation technique,which based on extended wavenumber domain algorithm.Compared to the traditional extend wavenumber domain algorithm and point simulation,the new approach not only has less compute complexity,but also it suitable for real-time synthetic aperture radar（SAR） processing.