Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter

In turbid water, target reflected lidar signal is easily buried in “clutter” due to scattering. We proposed an underwater laser ranging model applying an optical vortex in the receiver to separate the scattering clutter from the target reflected signal. A spiral phase plate (SP...

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Autores principales:	YingQi Liao, SuHui Yang, Kun Li, Yan Hao, Zhuo Li, Xin Wang, JinYing Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2022
Materias:	Scattering imaging systems mie theory Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/7fe965dbf13e421c8efe68bff7fac3d6
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id	oai:doaj.org-article:7fe965dbf13e421c8efe68bff7fac3d6
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spelling	oai:doaj.org-article:7fe965dbf13e421c8efe68bff7fac3d62021-11-17T00:00:06ZNumerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter1943-065510.1109/JPHOT.2021.3125225https://doaj.org/article/7fe965dbf13e421c8efe68bff7fac3d62022-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9601166/https://doaj.org/toc/1943-0655In turbid water, target reflected lidar signal is easily buried in “clutter” due to scattering. We proposed an underwater laser ranging model applying an optical vortex in the receiver to separate the scattering clutter from the target reflected signal. A spiral phase plate (SPP) was placed in front of the detector to convert the target reflected Gaussian beam to an optical vortex. While the scattering clutters were not able to be converted due to the loss of spatial coherence. Therefore, the target reflected signal and scattering clutters were spatially separated by the SPP. An underwater laser detection simulation using Zemax software was carried out. The numerical simulation showed that when the SPP was placed in front of the receiver, the contrast of signal to clutter of the detection was improved by blocking the scattering clutters which had a Gaussian distribution at the center on the detection plane. The effects of beam divergence and orbital angular momentum (OAM) order to the lidar performance were also analyzed.YingQi LiaoSuHui YangKun LiYan HaoZhuo LiXin WangJinYing ZhangIEEEarticleScatteringimaging systemsmie theoryApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 14, Iss 1, Pp 1-5 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Scattering imaging systems mie theory Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Scattering imaging systems mie theory Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 YingQi Liao SuHui Yang Kun Li Yan Hao Zhuo Li Xin Wang JinYing Zhang Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
description	In turbid water, target reflected lidar signal is easily buried in “clutter” due to scattering. We proposed an underwater laser ranging model applying an optical vortex in the receiver to separate the scattering clutter from the target reflected signal. A spiral phase plate (SPP) was placed in front of the detector to convert the target reflected Gaussian beam to an optical vortex. While the scattering clutters were not able to be converted due to the loss of spatial coherence. Therefore, the target reflected signal and scattering clutters were spatially separated by the SPP. An underwater laser detection simulation using Zemax software was carried out. The numerical simulation showed that when the SPP was placed in front of the receiver, the contrast of signal to clutter of the detection was improved by blocking the scattering clutters which had a Gaussian distribution at the center on the detection plane. The effects of beam divergence and orbital angular momentum (OAM) order to the lidar performance were also analyzed.
format	article
author	YingQi Liao SuHui Yang Kun Li Yan Hao Zhuo Li Xin Wang JinYing Zhang
author_facet	YingQi Liao SuHui Yang Kun Li Yan Hao Zhuo Li Xin Wang JinYing Zhang
author_sort	YingQi Liao
title	Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
title_short	Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
title_full	Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
title_fullStr	Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
title_full_unstemmed	Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter
title_sort	numerical simulation of performance improvement of underwater lidar by using a spiral phase plate as spatial filter
publisher	IEEE
publishDate	2022
url	https://doaj.org/article/7fe965dbf13e421c8efe68bff7fac3d6
work_keys_str_mv	AT yingqiliao numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT suhuiyang numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT kunli numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT yanhao numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT zhuoli numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT xinwang numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter AT jinyingzhang numericalsimulationofperformanceimprovementofunderwaterlidarbyusingaspiralphaseplateasspatialfilter
_version_	1718426059200790528

Numerical Simulation of Performance Improvement of Underwater Lidar by Using a Spiral Phase Plate as Spatial Filter

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