Target height measurement under complex multipath interferences without exact knowledge on the propagation environment

This paper investigates the direction-of-arrival (DOA) estimation-based target localization problem using an array radar under complex multipath propagation scenarios. Prevalent methods may suffer from performance degradation due to the deterministic signal model mismatch, especially when the exact...

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Main Authors: Liu, Yuan, Liu, Hongwei
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/168675
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1686752023-06-16T15:40:13Z Target height measurement under complex multipath interferences without exact knowledge on the propagation environment Liu, Yuan Liu, Hongwei School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Coherent Interference Effect Direction-of-Arrival Estimation This paper investigates the direction-of-arrival (DOA) estimation-based target localization problem using an array radar under complex multipath propagation scenarios. Prevalent methods may suffer from performance degradation due to the deterministic signal model mismatch, especially when the exact knowledge of a propagation environment is unavailable. To cope with this problem, we first establish an improved signal model of multipath propagation for low-angle target localization scenarios, where the dynamic nature of convoluted interferences induced by complex terrain reflections is taken into account. Subsequently, an iterative implementation-based target localization algorithm with the improved propagation model is proposed to eliminate the detrimental effect of coherent interferences on target localization performance. Compared to existing works, the proposed algorithm can maintain satisfactory estimation performance in terms of target location parameters, even in severe multipath interference conditions, where the decorrelation preprocessing and accurate knowledge about the multipath propagation environment are not required. Both simulation and experimental results demonstrate the effectiveness of the proposed propagation model and localization algorithm. Published version This work was supported by the National Natural Science Foundation of China under Grant 62192714. 2023-06-14T04:55:22Z 2023-06-14T04:55:22Z 2022 Journal Article Liu, Y. & Liu, H. (2022). Target height measurement under complex multipath interferences without exact knowledge on the propagation environment. Remote Sensing, 14(13), 3099-. https://dx.doi.org/10.3390/rs14133099 2072-4292 https://hdl.handle.net/10356/168675 10.3390/rs14133099 2-s2.0-85133469679 13 14 3099 en Remote Sensing © 2022 by the author. 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 (https://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Coherent Interference Effect
Direction-of-Arrival Estimation
spellingShingle Engineering::Electrical and electronic engineering
Coherent Interference Effect
Direction-of-Arrival Estimation
Liu, Yuan
Liu, Hongwei
Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
description This paper investigates the direction-of-arrival (DOA) estimation-based target localization problem using an array radar under complex multipath propagation scenarios. Prevalent methods may suffer from performance degradation due to the deterministic signal model mismatch, especially when the exact knowledge of a propagation environment is unavailable. To cope with this problem, we first establish an improved signal model of multipath propagation for low-angle target localization scenarios, where the dynamic nature of convoluted interferences induced by complex terrain reflections is taken into account. Subsequently, an iterative implementation-based target localization algorithm with the improved propagation model is proposed to eliminate the detrimental effect of coherent interferences on target localization performance. Compared to existing works, the proposed algorithm can maintain satisfactory estimation performance in terms of target location parameters, even in severe multipath interference conditions, where the decorrelation preprocessing and accurate knowledge about the multipath propagation environment are not required. Both simulation and experimental results demonstrate the effectiveness of the proposed propagation model and localization algorithm.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Liu, Yuan
Liu, Hongwei
format Article
author Liu, Yuan
Liu, Hongwei
author_sort Liu, Yuan
title Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
title_short Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
title_full Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
title_fullStr Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
title_full_unstemmed Target height measurement under complex multipath interferences without exact knowledge on the propagation environment
title_sort target height measurement under complex multipath interferences without exact knowledge on the propagation environment
publishDate 2023
url https://hdl.handle.net/10356/168675
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