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中国科学院大学学报 ›› 2011, Vol. 28 ›› Issue (3): 360-365.DOI: 10.7523/j.issn.2095-6134.2011.3.013

• 论文 • 上一篇    下一篇

ScanSAR与TOPSAR的对比研究

刘保坤1,2, 禹卫东1   

  1. 1. 中国科学院电子学研究所, 北京 100190;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2010-06-01 修回日期:2010-09-21 发布日期:2011-05-15

Comparative study on ScanSAR and TOPSAR

LIU Bao-Kun1,2, YU Wei-Dong1   

  1. 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-06-01 Revised:2010-09-21 Published:2011-05-15

摘要:

基于ScanSAR工作模式的特点,研究了scalloping效应产生的机理.从成像机理、信号特点及成像算法等方面对TOPSAR进行了详细的分析.ScanSAR和TOPSAR的点目标仿真结果表明,TOPSAR较好地解决了ScanSAR的scalloping效应问题,即幅度不均匀调制问题.

关键词: 频谱分析算法, TOPS, ScanSAR, 基带方位变标, 扇贝效应

Abstract:

Based on the characteristics of the ScanSAR mode, the mechanisms of scalloping effect are analyzed. A detailed description of TOPSAR in terms of data acquisition principle, signal characteristics, and processing algorithm is presented. Simulations for the point targets using ScanSAR and TOPSAR are implemented and the results show that TOPSAR has solved the problem of periodical modulation of the amplitude in ScanSAR.

Key words: SPECtral analysis (SPECAN), TOPS, ScanSAR, BAS, scalloping

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