Application of Combined Pulse-Series Coding in Wide-Swath SAR

TANG Bo; WANG Wei-yan

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Application of Combined Pulse-Series Coding in Wide-Swath SAR

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- Application of Combined Pulse-Series Coding in Wide-Swath SAR
- Acta Electronica Sinica Vol. 33, Issue 6, Pages: 1004-1007(2005)
- 作者机构：
  
  1. 中国科学院电子学研究所微波成像技术国家级重点实验室,北京,100080
  2. 中国科学院研究生院,北京,100039
  3. 中国科学院电子学研究所微波成像技术国家级重点实验室北京,100080
  4. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN951
- Published：2005
- 稿件说明：
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TANG Bo, WANG Wei-yan. Application of Combined Pulse-Series Coding in Wide-Swath SAR[J]. Acta Electronica Sinica, 2005, 33(6): 1004-1007.
DOI：

TANG Bo, WANG Wei-yan. Application of Combined Pulse-Series Coding in Wide-Swath SAR[J]. Acta Electronica Sinica, 2005, 33(6): 1004-1007. DOI：

摘要

针对合成孔径雷达(Synthetic Aperture Radar

SAR)的距离模糊问题

本文提出组合调制脉冲序列的方法.特点是可以在距离向和方位向两维上对距离模糊进行抑制.其中

在方位向上需要使用本文给出的方位向相位调制法.由于产生距离模糊的回波一定是两个(或多个)在不同时刻发射出的脉冲的地面回波的叠加

可以在发射前对其分别进行不同的相移

然后从回波中修正前者的相移

而后者仍保留两个相移之差.这样就使后者多普勒历程被修改而前者不变.

Abstract

This paper presents a method of combined pulse-series coding which is used to suppress range ambiguity in Synthetic Aperture Radar (SAR).This method can suppress

in both range and azimuth

range ambiguity of back-scattered signals.Specially

an azimuth phase shifting method is presented and used in this combined pulse-series coding method to suppress range ambiguity in azimuth.Azimuth phase shifting method is based on the fact that back-scattered signals with range ambiguity are generated by pulses of different eradiating time.Following this method

shift pulses by different phases firstly

and then reverse-shift the back-scattered signals by one of these phases.Consequently

the Doppler history of back-scattered signals will be disturbed except the desired signal whose shifted phase is completely reverse-shifted.

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