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      A Digital Dechirp Approach for Synthetic Aperture Radar

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          Abstract

          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.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 August 2015
          : 4
          : 4
          : 474-480
          Affiliations
          [1 ] Institute of Electronics, Chinese Academy of Sciences
          Article
          f69d72aa359740a4bc9ae5aadbb975b6
          10.12000/JR14117

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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