A Digital Dechirp Approach for Synthetic Aperture Radar

In this study, a digital dechirp approach for Synthetic Aperture Radar (SAR) is discussed. It can be applied to lightweight MiniSar systems with longer pulse width than swath. With this method, and after data acquisition with lower sampling rate than the bandwidth of the transmitted LFM signal and d...

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Bibliographic Details
Main Authors: Zhan Xue-li, Wang Yan-fei, Wang Chao, Li He-ping
Format: Article
Language:English
Published: China Science Publishing & Media Ltd. (CSPM) 2015-08-01
Series:Leida xuebao
Subjects:
Online Access:http://radars.ie.ac.cn/CN/html/20150413.htm
Description
Summary:In this study, a digital dechirp approach for Synthetic Aperture Radar (SAR) is discussed. It can be applied to lightweight MiniSar systems with longer pulse width than swath. With this method, and after data acquisition with lower sampling rate than the bandwidth of the transmitted LFM signal and digital dechirp, pulse compression can be obtained by spectral analysis in the range direction without aliasing. The approach is described in detail and the sampling frequency selection criteria are derived. Theoretical formulations and numerical simulations verify the validity of the proposed approach.
ISSN:2095-283X
2095-283X