Equivalent-Squint-Range-Model Based Wavenumber Domain Focusing Algorithm for High Resolution Spaceborne SAR

LIU Li-guo; ZHOU Yin-qing

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Equivalent-Squint-Range-Model Based Wavenumber Domain Focusing Algorithm for High Resolution Spaceborne SAR

更新时间：2025-07-16

- Equivalent-Squint-Range-Model Based Wavenumber Domain Focusing Algorithm for High Resolution Spaceborne SAR
- Acta Electronica Sinica Vol. 31, Issue S1, Pages: 1998-2001(2003)
- 作者机构：
  
  北京航空航天大学电子信息工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN95
- Published Online：25 December 2003，
  
  Published：2003
- 稿件说明：
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LIU Li-guo, ZHOU Yin-qing. Equivalent-Squint-Range-Model Based Wavenumber Domain Focusing Algorithm for High Resolution Spaceborne SAR[J]. Acta Electronica Sinica, 2003, 31(S1): 1998-2001.
DOI：

LIU Li-guo, ZHOU Yin-qing. Equivalent-Squint-Range-Model Based Wavenumber Domain Focusing Algorithm for High Resolution Spaceborne SAR[J]. Acta Electronica Sinica, 2003, 31(S1): 1998-2001. DOI：

摘要

为了解决CS算法在距离压缩时无法使用带有误差的原始信号的问题

作者提出一种等效斜视的波数域算法.本文基于星载SAR等效斜视距离模型

利用Bamler提出的波数域算法推导方法

[1]

从原始回波信号模型入手

详细推导出基于等效斜视距离模型的高分辨率星载SAR波数域成像算法

并给出了该算法的实现步骤.该算法适用于大距离徙动高分辨率星载SAR的精确成像.文中利用点目标回波仿真数据验证了算法的有效性并给出了该算法成像的质量评估指标.

Abstract

For resolving the problem that the CS algorithms couldn't compress SAR data in range direction using the original signal with errors

the author introduced an Equivalent-Squint Wavenumber Domain algorithm.In this paper

the Squint-Range-Model based wavenumber domain focusing algorithm for high resolution spaceborne SAR is derived from original response signal using Bamler's method in accordance with the equivalent squint range model.This algorithm is suitable for precise imaging of high resolution spaceborne SAR with large range cell migration.Simulated data of point scatterer response is used to demonstrate the effectiveness of this algorithm and the evaluated result is given.

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