Cargando…

Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets

Golay complementary waveforms can, in theory, yield radar returns of high range resolution with essentially zero sidelobes. In practice, when deployed conventionally, while high signal-to-noise ratios can be achieved for static target detection, significant range sidelobes are generated by target re...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhu, Jiahua, Wang, Xuezhi, Huang, Xiaotao, Suvorova, Sofia, Moran, Bill
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5795560/
https://www.ncbi.nlm.nih.gov/pubmed/29324708
http://dx.doi.org/10.3390/s18010192
_version_ 1783297321258188800
author Zhu, Jiahua
Wang, Xuezhi
Huang, Xiaotao
Suvorova, Sofia
Moran, Bill
author_facet Zhu, Jiahua
Wang, Xuezhi
Huang, Xiaotao
Suvorova, Sofia
Moran, Bill
author_sort Zhu, Jiahua
collection PubMed
description Golay complementary waveforms can, in theory, yield radar returns of high range resolution with essentially zero sidelobes. In practice, when deployed conventionally, while high signal-to-noise ratios can be achieved for static target detection, significant range sidelobes are generated by target returns of nonzero Doppler causing unreliable detection. We consider signal processing techniques using Golay complementary waveforms to improve radar detection performance in scenarios involving multiple nonzero Doppler targets. A signal processing procedure based on an existing, so called, Binomial Design algorithm that alters the transmission order of Golay complementary waveforms and weights the returns is proposed in an attempt to achieve an enhanced illumination performance. The procedure applies one of three proposed waveform transmission ordering algorithms, followed by a pointwise nonlinear processor combining the outputs of the Binomial Design algorithm and one of the ordering algorithms. The computational complexity of the Binomial Design algorithm and the three ordering algorithms are compared, and a statistical analysis of the performance of the pointwise nonlinear processing is given. Estimation of the areas in the Delay–Doppler map occupied by significant range sidelobes for given targets are also discussed. Numerical simulations for the comparison of the performances of the Binomial Design algorithm and the three ordering algorithms are presented for both fixed and randomized target locations. The simulation results demonstrate that the proposed signal processing procedure has a better detection performance in terms of lower sidelobes and higher Doppler resolution in the presence of multiple nonzero Doppler targets compared to existing methods.
format Online
Article
Text
id pubmed-5795560
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-57955602018-02-13 Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets Zhu, Jiahua Wang, Xuezhi Huang, Xiaotao Suvorova, Sofia Moran, Bill Sensors (Basel) Article Golay complementary waveforms can, in theory, yield radar returns of high range resolution with essentially zero sidelobes. In practice, when deployed conventionally, while high signal-to-noise ratios can be achieved for static target detection, significant range sidelobes are generated by target returns of nonzero Doppler causing unreliable detection. We consider signal processing techniques using Golay complementary waveforms to improve radar detection performance in scenarios involving multiple nonzero Doppler targets. A signal processing procedure based on an existing, so called, Binomial Design algorithm that alters the transmission order of Golay complementary waveforms and weights the returns is proposed in an attempt to achieve an enhanced illumination performance. The procedure applies one of three proposed waveform transmission ordering algorithms, followed by a pointwise nonlinear processor combining the outputs of the Binomial Design algorithm and one of the ordering algorithms. The computational complexity of the Binomial Design algorithm and the three ordering algorithms are compared, and a statistical analysis of the performance of the pointwise nonlinear processing is given. Estimation of the areas in the Delay–Doppler map occupied by significant range sidelobes for given targets are also discussed. Numerical simulations for the comparison of the performances of the Binomial Design algorithm and the three ordering algorithms are presented for both fixed and randomized target locations. The simulation results demonstrate that the proposed signal processing procedure has a better detection performance in terms of lower sidelobes and higher Doppler resolution in the presence of multiple nonzero Doppler targets compared to existing methods. MDPI 2018-01-11 /pmc/articles/PMC5795560/ /pubmed/29324708 http://dx.doi.org/10.3390/s18010192 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
Zhu, Jiahua
Wang, Xuezhi
Huang, Xiaotao
Suvorova, Sofia
Moran, Bill
Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title_full Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title_fullStr Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title_full_unstemmed Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title_short Golay Complementary Waveforms in Reed–Müller Sequences for Radar Detection of Nonzero Doppler Targets
title_sort golay complementary waveforms in reed–müller sequences for radar detection of nonzero doppler targets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5795560/
https://www.ncbi.nlm.nih.gov/pubmed/29324708
http://dx.doi.org/10.3390/s18010192
work_keys_str_mv AT zhujiahua golaycomplementarywaveformsinreedmullersequencesforradardetectionofnonzerodopplertargets
AT wangxuezhi golaycomplementarywaveformsinreedmullersequencesforradardetectionofnonzerodopplertargets
AT huangxiaotao golaycomplementarywaveformsinreedmullersequencesforradardetectionofnonzerodopplertargets
AT suvorovasofia golaycomplementarywaveformsinreedmullersequencesforradardetectionofnonzerodopplertargets
AT moranbill golaycomplementarywaveformsinreedmullersequencesforradardetectionofnonzerodopplertargets