An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar

Photon counting lidar for long-range detection faces the problem of declining ranging performance caused by background noise. Current anti-noise methods are not robust enough in the case of weak signal and strong background noise, resulting in poor ranging error. In this work, based on the character...

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Autores principales:	Mingwei Huang, Zijing Zhang, Jiaheng Xie, Jiahuan Li, Yuan Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	entropy photon counting lidar noise mitigation ranging error Science Q Astrophysics QB460-466 Physics QC1-999
Acceso en línea:	https://doaj.org/article/27734037364e4f14b4a3da7cca71cfc2
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id	oai:doaj.org-article:27734037364e4f14b4a3da7cca71cfc2
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spelling	oai:doaj.org-article:27734037364e4f14b4a3da7cca71cfc22021-11-25T17:30:12ZAn Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar10.3390/e231114991099-4300https://doaj.org/article/27734037364e4f14b4a3da7cca71cfc22021-11-01T00:00:00Zhttps://www.mdpi.com/1099-4300/23/11/1499https://doaj.org/toc/1099-4300Photon counting lidar for long-range detection faces the problem of declining ranging performance caused by background noise. Current anti-noise methods are not robust enough in the case of weak signal and strong background noise, resulting in poor ranging error. In this work, based on the characteristics of the uncertainty of echo signal and noise in photon counting lidar, an entropy-based anti-noise method is proposed to reduce the ranging error under high background noise. Firstly, the photon counting entropy, which is considered as the feature to distinguish signal from noise, is defined to quantify the uncertainty of fluctuation among photon events responding to the Geiger mode avalanche photodiode. Then, the photon counting entropy is combined with a windowing operation to enhance the difference between signal and noise, so as to mitigate the effect of background noise and estimate the time of flight of the laser pulses. Simulation and experimental analysis show that the proposed method improves the anti-noise performance well, and experimental results demonstrate that the proposed method effectively mitigates the effect of background noise to reduce ranging error despite high background noise.Mingwei HuangZijing ZhangJiaheng XieJiahuan LiYuan ZhaoMDPI AGarticleentropyphoton counting lidarnoise mitigationranging errorScienceQAstrophysicsQB460-466PhysicsQC1-999ENEntropy, Vol 23, Iss 1499, p 1499 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	entropy photon counting lidar noise mitigation ranging error Science Q Astrophysics QB460-466 Physics QC1-999
spellingShingle	entropy photon counting lidar noise mitigation ranging error Science Q Astrophysics QB460-466 Physics QC1-999 Mingwei Huang Zijing Zhang Jiaheng Xie Jiahuan Li Yuan Zhao An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
description	Photon counting lidar for long-range detection faces the problem of declining ranging performance caused by background noise. Current anti-noise methods are not robust enough in the case of weak signal and strong background noise, resulting in poor ranging error. In this work, based on the characteristics of the uncertainty of echo signal and noise in photon counting lidar, an entropy-based anti-noise method is proposed to reduce the ranging error under high background noise. Firstly, the photon counting entropy, which is considered as the feature to distinguish signal from noise, is defined to quantify the uncertainty of fluctuation among photon events responding to the Geiger mode avalanche photodiode. Then, the photon counting entropy is combined with a windowing operation to enhance the difference between signal and noise, so as to mitigate the effect of background noise and estimate the time of flight of the laser pulses. Simulation and experimental analysis show that the proposed method improves the anti-noise performance well, and experimental results demonstrate that the proposed method effectively mitigates the effect of background noise to reduce ranging error despite high background noise.
format	article
author	Mingwei Huang Zijing Zhang Jiaheng Xie Jiahuan Li Yuan Zhao
author_facet	Mingwei Huang Zijing Zhang Jiaheng Xie Jiahuan Li Yuan Zhao
author_sort	Mingwei Huang
title	An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
title_short	An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
title_full	An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
title_fullStr	An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
title_full_unstemmed	An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar
title_sort	entropy-based anti-noise method for reducing ranging error in photon counting lidar
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/27734037364e4f14b4a3da7cca71cfc2
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An Entropy-Based Anti-Noise Method for Reducing Ranging Error in Photon Counting Lidar

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