Equivalent Squint Extended Chirp Scaling Algorithm for Spaceborne ScanSAR

WEI Jie; ZHOU Yin-qing; LI Chun-sheng

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Equivalent Squint Extended Chirp Scaling Algorithm for Spaceborne ScanSAR

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- Equivalent Squint Extended Chirp Scaling Algorithm for Spaceborne ScanSAR
- Acta Electronica Sinica Vol. 33, Issue 9, Pages: 1545-1548(2005)
- 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：2005
- 稿件说明：
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WEI Jie, ZHOU Yin-qing, LI Chun-sheng. Equivalent Squint Extended Chirp Scaling Algorithm for Spaceborne ScanSAR[J]. Acta Electronica Sinica, 2005, 33(9): 1545-1548.
DOI：

WEI Jie, ZHOU Yin-qing, LI Chun-sheng. Equivalent Squint Extended Chirp Scaling Algorithm for Spaceborne ScanSAR[J]. Acta Electronica Sinica, 2005, 33(9): 1545-1548. DOI：

摘要

本文提出一种适用于大距离徙动星载ScanSAR成像处理的等效斜视距离模型Extended Chirp Scaling(ECS)成像处理算法.根据误差最小的等效斜视距离模型

改进了ECS成像算法的部分因子

给出了实现步骤.此外

为消除ScanSAR成像时的Scalloping效应

算法中还结合了视加权处理.最后

计算机仿真验证了算法的有效性

并进行了成像性能分析.

Abstract

To resolve the precise imaging problem of spaceborne Scanned-beam Synthetic Aperture Radar (ScanSAR) with large range cell migration

a novel Equivalent-Squint Extended Chirp Scaling (ES-ECS) algorithm is proposed.The full derivation and the realizing approach of the algorithm are presented with the squinted equivalent range model

which describes the relationship of spaceborne geometrical more precisely than the broadside range model.And the optimum look weighting approach is also introduced to avoid the scalloping effect.Finally

the algorithm is verified by simulations.

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Spaceborne SCANSAR Mode and Computer Simulating

Related Author

XU Hua-ping

ZHOU Yin-qing

LI Chun-sheng

Related Institution

Dept of Electronic Engineering,Beijing university of Aeronautics and Astronautics

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