SC-Chirp Scaling Algorithm Based on Nonlinear FM Filter

CHEN Jie; HUANG Yan; LI Chun-sheng; ZHOU Yin-qing

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SC-Chirp Scaling Algorithm Based on Nonlinear FM Filter

更新时间：2025-07-16

- SC-Chirp Scaling Algorithm Based on Nonlinear FM Filter
- Acta Electronica Sinica Vol. 28, Issue 12, Pages: 5-7(2000)
- 作者机构：
  
  北京航空航天大学电子工程系,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：2000
- 稿件说明：
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CHEN Jie, HUANG Yan, LI Chun-sheng, et al. SC-Chirp Scaling Algorithm Based on Nonlinear FM Filter[J]. Acta Electronica Sinica, 2000, 28(12): 5-7.
DOI：

CHEN Jie, HUANG Yan, LI Chun-sheng, et al. SC-Chirp Scaling Algorithm Based on Nonlinear FM Filter[J]. Acta Electronica Sinica, 2000, 28(12): 5-7. DOI：

摘要

本文分析了Chirp Scaling算法推导过程中残留三次相位误差对成像质量的影响

在此基础上提出了一种基于非线性FM滤波的高分辨星载SAR成像处理SC-Chirp Scaling算法.该算法采用斜视等效距离模型

利用非线性FM滤波方法实现了Chirp Scaling算法的三次相位误差修正

使高分辨率星载SAR成像质量获得明显改善.计算机仿真结果验证了该算法的有效性.

Abstract

The effects of residual cubic phase error induced by Chirp Scaling algorithm on SAR image qualities are analyzed

and an SC-Chirp Scaling imaging algorithm for high resolution spaceborne SAR based on nonlinear FM filter is proposed in this paper.Squint equivalent range model is used

and a nonlinear FM filter method is applied to achieve cubic phase error correction in the algorithm.Computer simulation results are presented

which illustrate the algorithm having the capability to acquire evident improvement of high resolution spaceborne SAR image qualities.

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Related Institution

Dept.of Electronic Engineering,Beijing University of Aeronautics and Astronautics

北京航空航天大学203教研室北京 100083

Department of electronic engineering,Beijing University of Aeronautics and Astronautics

School of Electronic Science and Engineering,National University of Defense Technology

Key Laboratory of Radar Signal Processing,Xidian University

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