A Wavenumber Domain Algorithm for Spaceborne Bistatic SAR Imaging with Large Squint Angle

HE Feng; LIANG Dian-nong; DONG Zhen

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A Wavenumber Domain Algorithm for Spaceborne Bistatic SAR Imaging with Large Squint Angle

更新时间：2025-07-16

- A Wavenumber Domain Algorithm for Spaceborne Bistatic SAR Imaging with Large Squint Angle
- Acta Electronica Sinica Vol. 33, Issue 6, Pages: 1011-1014(2005)
- 作者机构：
  
  国防科技大学电子科学与工程学院,湖南,长沙,410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：2005
- 稿件说明：
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HE Feng, LIANG Dian-nong, DONG Zhen. A Wavenumber Domain Algorithm for Spaceborne Bistatic SAR Imaging with Large Squint Angle[J]. Acta Electronica Sinica, 2005, 33(6): 1011-1014.
DOI：

HE Feng, LIANG Dian-nong, DONG Zhen. A Wavenumber Domain Algorithm for Spaceborne Bistatic SAR Imaging with Large Squint Angle[J]. Acta Electronica Sinica, 2005, 33(6): 1011-1014. DOI：

摘要

本文提出一种星载双基地SAR(Synthetic Aperture Radar)等效平行轨迹距离模型

计算表明该模型误差远远小于直接基于多普勒参数的二阶距离模型.基于该距离模型提出一种星载双基地SAR波数域成像算法

能在大斜视角、高分辨率情况下精确成像.最后对仿真点目标双基地回波进行成像处理

结果与基于二阶距离模型的成像算法相比较

证明了本文等效距离模型和成像算法的优越性.

Abstract

A parallel-track range model for spaceborne bistatic SAR is proposed

which has a much higher accuracy compared with classical two-order range model based on Doppler centroid frequency and Doppler FM rate.A wavenumber domain algorithm for spaceborne bistatic SAR imaging is then proposed based on that range model.The quality of images of simulated bistatic echoes focused by the algorithm is much better than algorithm based on two-order range model at the case of large squint angle and high resolution.

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Related Institution

Key Laboratory of Radar Signal Processing,Xidian University

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Dept.of Electronic EngineeringBeijing University of Aeronautics and AstronauticsBeijing 100083China

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