{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:49:51Z","timestamp":1760240991522,"version":"build-2065373602"},"reference-count":36,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2019,11,1]],"date-time":"2019-11-01T00:00:00Z","timestamp":1572566400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Aiming at the application demand in underwater noise monitoring, observation of marine animal, antisubmarine and underwater target localization, a high-SNR underwater acoustic signal acquisition (UASA) node that combines a self-contained acquisition system and floating platform is designed to improve the acquisition performance of a single UASA node, and a high-accuracy synchronization sampling method among multiple distributed UASA nodes based on master-slave dual phase-locked loops (MSDPLL) is proposed to improve the synchronization sampling accuracy. According to the equivalent model of hydrophone and application requirements, low noise signal conditioning circuit and large-capacity data storage modules are designed. Based on the long-term monitoring requirements for underwater acoustic signal and distributed positioning requirements for underwater targets, the structure of a single UASA node is designed and MSDPLL is developed for high-accuracy synchronization sampling among multiple UASA nodes. Related experimental results verified the performance of the UASA node and the synchronization sampling method.<\/jats:p>","DOI":"10.3390\/s19214749","type":"journal-article","created":{"date-parts":[[2019,11,1]],"date-time":"2019-11-01T12:30:50Z","timestamp":1572611450000},"page":"4749","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Self-Contained High-SNR Underwater Acoustic Signal Acquisition Node and Synchronization Sampling Method for Multiple Distributed Nodes"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0611-6501","authenticated-orcid":false,"given":"Jiajia","family":"Jiang","sequence":"first","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Han","family":"Liu","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Fajie","family":"Duan","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Xianquan","family":"Wang","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Xiao","family":"Fu","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Chunyue","family":"Li","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Zhongbo","family":"Sun","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]},{"given":"Xinyuan","family":"Dong","sequence":"additional","affiliation":[{"name":"The State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, 92 Wei Jin Road, Tianjin 300072, China"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1109\/79.689583","article-title":"The past, present, and the future of underwater acoustic signal processing","volume":"15","author":"Vaccaro","year":"1998","journal-title":"IEEE Signal Process. 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