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Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System

Pulse Doppler (PD) systems are widely used for moving target detection, especially in scenarios with clutter. Range ambiguity, which arises from fixed parameters in waveforms, is an inherent drawback in conventional systems. By using a diverse pulse train such as a train of coherent diverse phase co...

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Detalles Bibliográficos
Autores principales: Xu, Jiacen, Ren, Lixiang, Fan, Huayu, Mao, Erke, Liu, Quanhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6069215/
https://www.ncbi.nlm.nih.gov/pubmed/30021950
http://dx.doi.org/10.3390/s18072326
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author Xu, Jiacen
Ren, Lixiang
Fan, Huayu
Mao, Erke
Liu, Quanhua
author_facet Xu, Jiacen
Ren, Lixiang
Fan, Huayu
Mao, Erke
Liu, Quanhua
author_sort Xu, Jiacen
collection PubMed
description Pulse Doppler (PD) systems are widely used for moving target detection, especially in scenarios with clutter. Range ambiguity, which arises from fixed parameters in waveforms, is an inherent drawback in conventional systems. By using a diverse pulse train such as a train of coherent diverse phase coded pulses, these ambiguous peaks can be suppressed effectively but at the cost of sidelobe dispersions. In this work, a novel efficient PD process is proposed to suppress range ambiguity and detect moving targets under strong clutter. Poly-phase coded pulses are employed along with optimal receiving filters, by which the dispersed sidelobes are mitigated to a great extent. Moreover, a novel clutter suppression procedure is included in the PD process, by which strong clutter can be greatly suppressed. Well-designed receiving and inverse filters are employed. Simulation examples are presented to verify the theories. Compared with conventional methods, much better detection results are obtained for both near and remote targets, especially in scenarios with strong clutter.
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spelling pubmed-60692152018-08-07 Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System Xu, Jiacen Ren, Lixiang Fan, Huayu Mao, Erke Liu, Quanhua Sensors (Basel) Article Pulse Doppler (PD) systems are widely used for moving target detection, especially in scenarios with clutter. Range ambiguity, which arises from fixed parameters in waveforms, is an inherent drawback in conventional systems. By using a diverse pulse train such as a train of coherent diverse phase coded pulses, these ambiguous peaks can be suppressed effectively but at the cost of sidelobe dispersions. In this work, a novel efficient PD process is proposed to suppress range ambiguity and detect moving targets under strong clutter. Poly-phase coded pulses are employed along with optimal receiving filters, by which the dispersed sidelobes are mitigated to a great extent. Moreover, a novel clutter suppression procedure is included in the PD process, by which strong clutter can be greatly suppressed. Well-designed receiving and inverse filters are employed. Simulation examples are presented to verify the theories. Compared with conventional methods, much better detection results are obtained for both near and remote targets, especially in scenarios with strong clutter. MDPI 2018-07-18 /pmc/articles/PMC6069215/ /pubmed/30021950 http://dx.doi.org/10.3390/s18072326 Text en © 2018 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
Xu, Jiacen
Ren, Lixiang
Fan, Huayu
Mao, Erke
Liu, Quanhua
Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title_full Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title_fullStr Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title_full_unstemmed Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title_short Clutter and Range Ambiguity Suppression Using Diverse Pulse Train in Pulse Doppler System
title_sort clutter and range ambiguity suppression using diverse pulse train in pulse doppler system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6069215/
https://www.ncbi.nlm.nih.gov/pubmed/30021950
http://dx.doi.org/10.3390/s18072326
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