Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array

This paper presents a method for the joint detection and direction of arrival (DOA) estimation of low probability of detection (LPD) signals. The proposed approach is based on using the antenna array to receive spread-spectrum signals hidden below the noise floor. Array processing exploits the spati...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Jarosław Magiera
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	low probability of detection spread spectrum covert transmission signals intelligence electronic reconnaissance electronic support measures Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/d036a95e48954aec9bf905566910515f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d036a95e48954aec9bf905566910515f
record_format	dspace
spelling	oai:doaj.org-article:d036a95e48954aec9bf905566910515f2021-11-11T15:36:32ZDetection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array10.3390/electronics102125662079-9292https://doaj.org/article/d036a95e48954aec9bf905566910515f2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-9292/10/21/2566https://doaj.org/toc/2079-9292This paper presents a method for the joint detection and direction of arrival (DOA) estimation of low probability of detection (LPD) signals. The proposed approach is based on using the antenna array to receive spread-spectrum signals hidden below the noise floor. Array processing exploits the spatial correlation between phase-delayed copies of the signal and allows us to evaluate the parameter used to make the decision about the presence of LPD transmission. The DOA estimation is based on the covariance between signals received by sensors for the fixed geometry of the antenna array. Moreover, the paper provides a method for mitigating narrowband interferences prior to signal detection. The presented methods were verified through simulations which proved that the confident detection of a one-second transmission in an additive white Gaussian noise channel is possible even when the noise is 24 dB higher than the power of the received signal. The performance of DOA estimation is analyzed in a wide range of signal-to-noise and interference-to-noise ratios. It is found that the DOA may be estimated with an RMS error not exceeding 10 degrees, even if interference occupies 15% of the analyzed frequency band.Jarosław MagieraMDPI AGarticlelow probability of detectionspread spectrumcovert transmissionsignals intelligenceelectronic reconnaissanceelectronic support measuresElectronicsTK7800-8360ENElectronics, Vol 10, Iss 2566, p 2566 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	low probability of detection spread spectrum covert transmission signals intelligence electronic reconnaissance electronic support measures Electronics TK7800-8360
spellingShingle	low probability of detection spread spectrum covert transmission signals intelligence electronic reconnaissance electronic support measures Electronics TK7800-8360 Jarosław Magiera Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
description	This paper presents a method for the joint detection and direction of arrival (DOA) estimation of low probability of detection (LPD) signals. The proposed approach is based on using the antenna array to receive spread-spectrum signals hidden below the noise floor. Array processing exploits the spatial correlation between phase-delayed copies of the signal and allows us to evaluate the parameter used to make the decision about the presence of LPD transmission. The DOA estimation is based on the covariance between signals received by sensors for the fixed geometry of the antenna array. Moreover, the paper provides a method for mitigating narrowband interferences prior to signal detection. The presented methods were verified through simulations which proved that the confident detection of a one-second transmission in an additive white Gaussian noise channel is possible even when the noise is 24 dB higher than the power of the received signal. The performance of DOA estimation is analyzed in a wide range of signal-to-noise and interference-to-noise ratios. It is found that the DOA may be estimated with an RMS error not exceeding 10 degrees, even if interference occupies 15% of the analyzed frequency band.
format	article
author	Jarosław Magiera
author_facet	Jarosław Magiera
author_sort	Jarosław Magiera
title	Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
title_short	Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
title_full	Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
title_fullStr	Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
title_full_unstemmed	Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array
title_sort	detection and direction-of-arrival estimation of weak spread spectrum signals received with antenna array
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d036a95e48954aec9bf905566910515f
work_keys_str_mv	AT jarosławmagiera detectionanddirectionofarrivalestimationofweakspreadspectrumsignalsreceivedwithantennaarray
_version_	1718435079283277824

Detection and Direction-of-Arrival Estimation of Weak Spread Spectrum Signals Received with Antenna Array

Ejemplares similares