A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling

李春升; 黄岩; 王璇; 周荫清

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A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling

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- A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling
- Acta Electronica Sinica Issue 6, (1996)
- 作者机构：
  
  北京航空航天大学电子工程系
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：1996
- 稿件说明：
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[1]李春升,黄岩,王璇,周荫清.基于Chirp　Scaling算法的星载SAR成像处理实现方法[J].电子学报,1996(06):20-24.

李春升, 黄岩, 王璇, et al. A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling[J]. Acta Electronica Sinica, 1996, (6).
[1]李春升,黄岩,王璇,周荫清.基于Chirp　Scaling算法的星载SAR成像处理实现方法[J].电子学报,1996(06):20-24. DOI：

李春升, 黄岩, 王璇, et al. A Spaceborne SAR Imaging Processing Algorithm Using Chirp Scaling[J]. Acta Electronica Sinica, 1996, (6). DOI：

摘要

本文提出一种基于ＣｈｉｒｐＳｃａｌｉｎｇ（ＣＳ）算法的星载合成孔径雷达（ＳＡＲ）成像处理实现方法，该算法与目前国际上通用的距离－多普勒（ＲＤ）算法相比，由于避免了插值运算，且能够精确地进行距离徒动校正，使得成像质量优于精确的ＲＤ算法．该算法只需通过复乘和ＦＦＴ就能够进行成像处理，本文详细推导了ＣＳ算法，最后利用ＳＥＡＳＡＴ－Ａ卫星原始数据进行成像，证明了本文提出的算法的有效性．

Abstract

In this paper

a spaceborne synthetic aperture radar（SAR） imaging processing algorithm using chirp scaling（CS） algorithm is presented. Comparing with range/Doppler（RD） algorithm

this algorithm avoids interpolation

yet performs range cell migration correction accurately

so CS algorithm provides image quality results better than the precision RD algorithm. The algorithm requires only complex multiplies and fast Fourier transforms to implement the processing.This paper describes the chirp scaling algorithm in detail

and using SEASAT-A raw data makes computer digital imaging. The results show that imaging method presented in this paper is effectlve.

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