The Real-Time Image Processing of the SAR of the De-Chirped Wide Bandwidth LFM Signal

LI Ming-feng; WANG Zhen-song; ZHANG Tao; YAO Ping; HAN Ji-zhong

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The Real-Time Image Processing of the SAR of the De-Chirped Wide Bandwidth LFM Signal

更新时间：2025-07-16

- The Real-Time Image Processing of the SAR of the De-Chirped Wide Bandwidth LFM Signal
- Acta Electronica Sinica Vol. 31, Issue 12, Pages: 1911-1913(2003)
- 作者机构：
  
  1. 中科院计算技术研究所,北京,100080
  2. 中科院电子学研究所,北京,100080
  3. 中科院计算技术研究所北京,100080
  4. 中科院电子学研究所北京,100080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957.52
- Published：2003
- 稿件说明：
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LI Ming-feng, WANG Zhen-song, ZHANG Tao, et al. The Real-Time Image Processing of the SAR of the De-Chirped Wide Bandwidth LFM Signal[J]. Acta Electronica Sinica, 2003, 31(12): 1911-1913.
DOI：

LI Ming-feng, WANG Zhen-song, ZHANG Tao, et al. The Real-Time Image Processing of the SAR of the De-Chirped Wide Bandwidth LFM Signal[J]. Acta Electronica Sinica, 2003, 31(12): 1911-1913. DOI：

摘要

本文阐述了对采用去调频宽带LFM信号方法的SAR条带模式数据进行高分辨率实时成像的处理算法.与以前的实时处理不同之处在于:(1)距离向目标的回波信号经过了去调频处理;(2)要对距离单元迁移实时校正;(3)方位向单孔径实时连续成像.本文详细讨论了对SAR距离向去调频数据处理的原理和方法

提出适合实时处理的距离迁移校正的方法

并分析了整个实时处理流程的时限和计算量.实践证明本文的实时处理算法和流程是有效的.

Abstract

The high resolution real-time image processing method for the strip mode SAR with the stretching method of the broadband LFM signal is discussed in this paper.There are three differences from the existing real-time image processors.The first is the echo of range is de-chirped in SAR receiver

the second is the necessity of real-time correcting the range cell migration during the processing

and the third is the real-time continuous processing by one-aperture method in azimuth.The processing principle and method for the de-chirped range data is analyzed in detail and the RCMC suited for real-time processing is discussed carefully.At last

the time limitation and the total amount of computation in real-time image processing are analyzed clearly.

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Related Institution

Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education of ChinaInstitute of Intelligent Information ProcessingXidian UniversityXi'anShaanxi 710071China

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Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education of China, Institute of Intelligent Information Processing,Xidian University

Institute of Applied Mathematics,School of Mathematics and Information Sciences,Henan University

National Key Laboratory of Target and Environment Electromagnetic Scattering and RadiationBeijing Institute of Environmental Characteristics Beijing 100854China

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