Reference Phase Stabilizer for Distributed Underwater Sonar Systems

An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Lijie Yang [verfasserIn] Ruirui Dang [verfasserIn] Chunyi Song [verfasserIn] Zhiwei Xu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	distributed sonar systems reference dissemination phase synchronization

Übergeordnetes Werk:	In: Sensors - MDPI AG, 2003, 18(2018), 12, p 4279
Übergeordnetes Werk:	volume:18 ; year:2018 ; number:12, p 4279

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/s18124279

Katalog-ID:	DOAJ079159850

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520			\|a An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused by fiber length variations. In this paper, we propose a fiber-based phase stabilizer method to achieve accurate clock synchronization among sensor nodes. We use fiber-based feedback loop between sensor nodes and central station unit to monitor phase variations. Subsequently, we leverage phase shifters symmetrically arranged on the forward lane and feedback lane to compensate real-time phase variation and maintain high-precision synchronization. Besides, an ambiguity eliminator circuit is designed to remove the clock’s cyclic ambiguity. Both analysis and experimental results suggest that the proposed phase stabilizer can achieve 10 MHz reference clock synchronization within 0.4 degree. We also analyze the impact of the reference clock’s phase error on the system range detection accuracy, which indicates that the proposed phase stabilizer can greatly improve detection accuracy of sonar systems.
650		4	\|a distributed sonar systems
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650		4	\|a phase synchronization
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allfieldsSound	10.3390/s18124279 doi (DE-627)DOAJ079159850 (DE-599)DOAJ9c1410d8569249ce8c1732280be0be1a DE-627 ger DE-627 rakwb eng TP1-1185 Lijie Yang verfasserin aut Reference Phase Stabilizer for Distributed Underwater Sonar Systems 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused by fiber length variations. In this paper, we propose a fiber-based phase stabilizer method to achieve accurate clock synchronization among sensor nodes. We use fiber-based feedback loop between sensor nodes and central station unit to monitor phase variations. Subsequently, we leverage phase shifters symmetrically arranged on the forward lane and feedback lane to compensate real-time phase variation and maintain high-precision synchronization. Besides, an ambiguity eliminator circuit is designed to remove the clock’s cyclic ambiguity. Both analysis and experimental results suggest that the proposed phase stabilizer can achieve 10 MHz reference clock synchronization within 0.4 degree. We also analyze the impact of the reference clock’s phase error on the system range detection accuracy, which indicates that the proposed phase stabilizer can greatly improve detection accuracy of sonar systems. distributed sonar systems reference dissemination phase synchronization Chemical technology Ruirui Dang verfasserin aut Chunyi Song verfasserin aut Zhiwei Xu verfasserin aut In Sensors MDPI AG, 2003 18(2018), 12, p 4279 (DE-627)331640910 (DE-600)2052857-7 14248220 nnns volume:18 year:2018 number:12, p 4279 https://doi.org/10.3390/s18124279 kostenfrei https://doaj.org/article/9c1410d8569249ce8c1732280be0be1a kostenfrei https://www.mdpi.com/1424-8220/18/12/4279 kostenfrei https://doaj.org/toc/1424-8220 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2111 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 18 2018 12, p 4279
language	English
source	In Sensors 18(2018), 12, p 4279 volume:18 year:2018 number:12, p 4279
sourceStr	In Sensors 18(2018), 12, p 4279 volume:18 year:2018 number:12, p 4279
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	distributed sonar systems reference dissemination phase synchronization Chemical technology
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container_title	Sensors
authorswithroles_txt_mv	Lijie Yang @@aut@@ Ruirui Dang @@aut@@ Chunyi Song @@aut@@ Zhiwei Xu @@aut@@
publishDateDaySort_date	2018-01-01T00:00:00Z
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callnumber-first	T - Technology
author	Lijie Yang
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topic_title	TP1-1185 Reference Phase Stabilizer for Distributed Underwater Sonar Systems distributed sonar systems reference dissemination phase synchronization
topic	misc TP1-1185 misc distributed sonar systems misc reference dissemination misc phase synchronization misc Chemical technology
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title	Reference Phase Stabilizer for Distributed Underwater Sonar Systems
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title_auth	Reference Phase Stabilizer for Distributed Underwater Sonar Systems
abstract	An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused by fiber length variations. In this paper, we propose a fiber-based phase stabilizer method to achieve accurate clock synchronization among sensor nodes. We use fiber-based feedback loop between sensor nodes and central station unit to monitor phase variations. Subsequently, we leverage phase shifters symmetrically arranged on the forward lane and feedback lane to compensate real-time phase variation and maintain high-precision synchronization. Besides, an ambiguity eliminator circuit is designed to remove the clock’s cyclic ambiguity. Both analysis and experimental results suggest that the proposed phase stabilizer can achieve 10 MHz reference clock synchronization within 0.4 degree. We also analyze the impact of the reference clock’s phase error on the system range detection accuracy, which indicates that the proposed phase stabilizer can greatly improve detection accuracy of sonar systems.
abstractGer	An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused by fiber length variations. In this paper, we propose a fiber-based phase stabilizer method to achieve accurate clock synchronization among sensor nodes. We use fiber-based feedback loop between sensor nodes and central station unit to monitor phase variations. Subsequently, we leverage phase shifters symmetrically arranged on the forward lane and feedback lane to compensate real-time phase variation and maintain high-precision synchronization. Besides, an ambiguity eliminator circuit is designed to remove the clock’s cyclic ambiguity. Both analysis and experimental results suggest that the proposed phase stabilizer can achieve 10 MHz reference clock synchronization within 0.4 degree. We also analyze the impact of the reference clock’s phase error on the system range detection accuracy, which indicates that the proposed phase stabilizer can greatly improve detection accuracy of sonar systems.
abstract_unstemmed	An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub degree. Potential phase misalignment is caused by fiber length variations. In this paper, we propose a fiber-based phase stabilizer method to achieve accurate clock synchronization among sensor nodes. We use fiber-based feedback loop between sensor nodes and central station unit to monitor phase variations. Subsequently, we leverage phase shifters symmetrically arranged on the forward lane and feedback lane to compensate real-time phase variation and maintain high-precision synchronization. Besides, an ambiguity eliminator circuit is designed to remove the clock’s cyclic ambiguity. Both analysis and experimental results suggest that the proposed phase stabilizer can achieve 10 MHz reference clock synchronization within 0.4 degree. We also analyze the impact of the reference clock’s phase error on the system range detection accuracy, which indicates that the proposed phase stabilizer can greatly improve detection accuracy of sonar systems.
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title_short	Reference Phase Stabilizer for Distributed Underwater Sonar Systems
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Reference Phase Stabilizer for Distributed Underwater Sonar Systems

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