A Realization of Signal-Model-Based SAR Imaging via Atomic Decomposition

• GAO Yesheng

  Department of Electronic Engineering, Shanghai Jiao Tong University

• SHENG Hui

  Department of Electronic Engineering, Shanghai Jiao Tong University

• WANG Kaizhi

  Department of Electronic Engineering, Shanghai Jiao Tong University

• LIU Xingzhao

  Department of Electronic Engineering, Shanghai Jiao Tong University

抄録

A signal-model-based SAR image formation algorithm is proposed in this paper. A model is used to describe the received signal, and each scatterer can be characterized by a set of its parameters. Two parameter estimation methods via atomic decomposition are presented: (1) applying 1-D matching pursuit to azimuthal projection data; (2) applying 2-D matching pursuit to raw data. The estimated parameters are mapped to form a SAR image, and the mapping procedure can be implemented under application guidelines. This algorithm requires no prior information about the relative motion between the platform and the target. The Cramer-Rao bounds of parameter estimation are derived, and the root mean square errors of the estimates are close to the bounds. Experimental results are given to validate the algorithm and indicate its potential applications.

収録刊行物

• IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E98.A (9), 1906-1913, 2015

  一般社団法人 電子情報通信学会

キーワード

• SAR
• atomic decomposition
• matching pursuit
• Cramer-Rao bound

詳細情報

• CRID: 1390282681287336832
• NII論文ID: 130005095896
• DOI: 10.1587/transfun.e98.a.1906
• ISSN: 17451337
• ISSN: 09168508
• Web Site: https://www.jstage.jst.go.jp/article/transfun/E98.A/9/E98.A_1906/_pdf
• 本文言語コード: en
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