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Azimuth-range decouple-based L1 regularization method for wide ScanSAR imaging via extended chirp scaling

Bi, Hui and Zhang, Bingchen and Zhu, Xiao Xiang and Hong, Wen (2017) Azimuth-range decouple-based L1 regularization method for wide ScanSAR imaging via extended chirp scaling. Journal of Applied Remote Sensing, 11 (1), pp. 1-13. Society of Photo-optical Instrumentation Engineers (SPIE). DOI: 10.1117/1.JRS.11.015007 ISSN 1931-3195

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Official URL: https://www.spiedigitallibrary.org/journals/Journal-of-Applied-Remote-Sensing

Abstract

In this paper, we proposed an azimuth-range decouple-based L1 regularization method for wide ScanSAR imaging via extended chirp scaling (ECS) and applied it to the TerraSAR-X data to achieve large-scale sparse reconstruction. Compared with ECS, the conventional ScanSAR imaging algorithm based on matched filtering, the proposed method can improve the synthetic aperture radar image performance with full-sampling raw data for not only sparse but also nonsparse surveillance regions. It can also achieve high-resolution Imaging for sparse considered scenes efficiently using down-sampling raw data. Compared with a typical L1 regularization imaging approach, which requires transfer of the two-dimensional (2-D) echo data into a vector and reconstruction of the scene via 2-D matrix operation, our proposed method has less computational cost and hence makes the large-scale regularization reconstruction of considered area become possible. The experimental results via real data validate the effectiveness of the proposed method.

Item URL in elib:https://elib.dlr.de/119422/
Document Type:Article
Title:Azimuth-range decouple-based L1 regularization method for wide ScanSAR imaging via extended chirp scaling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bi, HuiIECASUNSPECIFIED
Zhang, BingchenIECASUNSPECIFIED
Zhu, Xiao XiangDLR-IMF/TUM-LMFUNSPECIFIED
Hong, WenIECASUNSPECIFIED
Date:2017
Journal or Publication Title:Journal of Applied Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:11
DOI :10.1117/1.JRS.11.015007
Page Range:pp. 1-13
Publisher:Society of Photo-optical Instrumentation Engineers (SPIE)
ISSN:1931-3195
Status:Published
Keywords:synthetic aperture radar, wide ScanSAR, extended chirp scaling, compressive sensing, regularization, azimuth-range decouple
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Ge, Nan
Deposited On:21 Mar 2018 12:19
Last Modified:31 Jul 2019 20:16

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