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A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR

The magnitude error and phase error (MEPE) in the transfer function of a stepped-frequency synthetic aperture radar (SAR) system results in a periodic MEPE in the synthesized wideband waveform (SWW), which induces the grating lobes in the high-resolution range profile (HRRP). In this paper, a robust...

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Autores principales: Gao, Wen-Bin, Long, Teng, Ding, Ze-Gang, Wu, Yi-Rong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5191047/
https://www.ncbi.nlm.nih.gov/pubmed/27929411
http://dx.doi.org/10.3390/s16122066
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author Gao, Wen-Bin
Long, Teng
Ding, Ze-Gang
Wu, Yi-Rong
author_facet Gao, Wen-Bin
Long, Teng
Ding, Ze-Gang
Wu, Yi-Rong
author_sort Gao, Wen-Bin
collection PubMed
description The magnitude error and phase error (MEPE) in the transfer function of a stepped-frequency synthetic aperture radar (SAR) system results in a periodic MEPE in the synthesized wideband waveform (SWW), which induces the grating lobes in the high-resolution range profile (HRRP). In this paper, a robust data-driven grating lobe suppression (GLS) method is proposed. Based on a contrast-based error estimation method and the grating lobes of the brightest scatterers in the SAR image, the periodic MEPE can be robustly estimated using the proposed method. By compensating the estimated periodic MEPE, the range grating lobes can be suppressed to the background level of the SAR image. Simulation results and real data processing have demonstrated the superiority of the proposed method.
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spelling pubmed-51910472017-01-03 A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR Gao, Wen-Bin Long, Teng Ding, Ze-Gang Wu, Yi-Rong Sensors (Basel) Article The magnitude error and phase error (MEPE) in the transfer function of a stepped-frequency synthetic aperture radar (SAR) system results in a periodic MEPE in the synthesized wideband waveform (SWW), which induces the grating lobes in the high-resolution range profile (HRRP). In this paper, a robust data-driven grating lobe suppression (GLS) method is proposed. Based on a contrast-based error estimation method and the grating lobes of the brightest scatterers in the SAR image, the periodic MEPE can be robustly estimated using the proposed method. By compensating the estimated periodic MEPE, the range grating lobes can be suppressed to the background level of the SAR image. Simulation results and real data processing have demonstrated the superiority of the proposed method. MDPI 2016-12-06 /pmc/articles/PMC5191047/ /pubmed/27929411 http://dx.doi.org/10.3390/s16122066 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gao, Wen-Bin
Long, Teng
Ding, Ze-Gang
Wu, Yi-Rong
A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title_full A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title_fullStr A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title_full_unstemmed A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title_short A Robust Range Grating Lobe Suppression Method Based on Image Contrast for Stepped-Frequency SAR
title_sort robust range grating lobe suppression method based on image contrast for stepped-frequency sar
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5191047/
https://www.ncbi.nlm.nih.gov/pubmed/27929411
http://dx.doi.org/10.3390/s16122066
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