Ground Moving Target Indication for HRWS-SAR Systems via Symmetric Reconstruction

Hongchao ZHENG; Junfeng WANG; Xingzhao LIU; Wentao LV

doi:10.1587/transfun.E99.A.1576

Ground Moving Target Indication for HRWS-SAR Systems via Symmetric Reconstruction

Hongchao ZHENG, Junfeng WANG, Xingzhao LIU, Wentao LV

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In this paper, a new scheme is presented for ground moving target indication for multichannel high-resolution wide-swath (HRWS) SAR systems with modified reconstruction filters. The conventional steering vector is generalized for moving targets through taking into account the additional Doppler centroid shift caused by the across-track velocity. Two modified steering vectors with symmetric velocity information are utilized to produce two images for the same scene. Due to the unmatched steering vectors, the stationary backgrounds are defocused but they still hold the same intensities in both images but moving targets are blurred to different extents. The ambiguous components of the moving targets can also be suppressed due to the beamforming in the reconstruction procedure. Therefore, ground moving target indication can be carried out via intensity comparison between the two images. The effectiveness of the proposed method is verified by both simulated and real airborne SAR data.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.8 pp.1576-1583

Publication Date: 2016/08/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E99.A.1576

Type of Manuscript: PAPER

Category: Digital Signal Processing

Authors

Hongchao ZHENG
  Shanghai Jiao Tong University
Junfeng WANG
  Shanghai Jiao Tong University
Xingzhao LIU
  Shanghai Jiao Tong University
Wentao LV
  the Zhejiang Sci-Tech University

Keyword

multichannel synthetic aperture radar (SAR), ground moving target indication (GMTI), high-resolution wide-swath (HRWS), symmetric reconstruction.

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Hongchao ZHENG, Junfeng WANG, Xingzhao LIU, Wentao LV, "Ground Moving Target Indication for HRWS-SAR Systems via Symmetric Reconstruction" in IEICE TRANSACTIONS on Fundamentals, vol. E99-A, no. 8, pp. 1576-1583, August 2016, doi: 10.1587/transfun.E99.A.1576.
Abstract: In this paper, a new scheme is presented for ground moving target indication for multichannel high-resolution wide-swath (HRWS) SAR systems with modified reconstruction filters. The conventional steering vector is generalized for moving targets through taking into account the additional Doppler centroid shift caused by the across-track velocity. Two modified steering vectors with symmetric velocity information are utilized to produce two images for the same scene. Due to the unmatched steering vectors, the stationary backgrounds are defocused but they still hold the same intensities in both images but moving targets are blurred to different extents. The ambiguous components of the moving targets can also be suppressed due to the beamforming in the reconstruction procedure. Therefore, ground moving target indication can be carried out via intensity comparison between the two images. The effectiveness of the proposed method is verified by both simulated and real airborne SAR data.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E99.A.1576/_p

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@ARTICLE{e99-a_8_1576,
author={Hongchao ZHENG, Junfeng WANG, Xingzhao LIU, Wentao LV, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Ground Moving Target Indication for HRWS-SAR Systems via Symmetric Reconstruction},
year={2016},
volume={E99-A},
number={8},
pages={1576-1583},
abstract={In this paper, a new scheme is presented for ground moving target indication for multichannel high-resolution wide-swath (HRWS) SAR systems with modified reconstruction filters. The conventional steering vector is generalized for moving targets through taking into account the additional Doppler centroid shift caused by the across-track velocity. Two modified steering vectors with symmetric velocity information are utilized to produce two images for the same scene. Due to the unmatched steering vectors, the stationary backgrounds are defocused but they still hold the same intensities in both images but moving targets are blurred to different extents. The ambiguous components of the moving targets can also be suppressed due to the beamforming in the reconstruction procedure. Therefore, ground moving target indication can be carried out via intensity comparison between the two images. The effectiveness of the proposed method is verified by both simulated and real airborne SAR data.},
keywords={},
doi={10.1587/transfun.E99.A.1576},
ISSN={1745-1337},
month={August},}

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TY - JOUR
TI - Ground Moving Target Indication for HRWS-SAR Systems via Symmetric Reconstruction
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1576
EP - 1583
AU - Hongchao ZHENG
AU - Junfeng WANG
AU - Xingzhao LIU
AU - Wentao LV
PY - 2016
DO - 10.1587/transfun.E99.A.1576
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E99-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2016
AB - In this paper, a new scheme is presented for ground moving target indication for multichannel high-resolution wide-swath (HRWS) SAR systems with modified reconstruction filters. The conventional steering vector is generalized for moving targets through taking into account the additional Doppler centroid shift caused by the across-track velocity. Two modified steering vectors with symmetric velocity information are utilized to produce two images for the same scene. Due to the unmatched steering vectors, the stationary backgrounds are defocused but they still hold the same intensities in both images but moving targets are blurred to different extents. The ambiguous components of the moving targets can also be suppressed due to the beamforming in the reconstruction procedure. Therefore, ground moving target indication can be carried out via intensity comparison between the two images. The effectiveness of the proposed method is verified by both simulated and real airborne SAR data.
ER -