{"doi":"10.1088/1361-6501/aa9f6e","title":"The low-frequency sound power measuring technique for an underwater source in a non-anechoic tank","abstract":"<jats:title>Abstract</jats:title>\n                  <jats:p>In order to determine the radiated sound power of an underwater source below the Schroeder cut-off frequency in a non-anechoic tank, a low-frequency extension measuring technique is proposed. This technique is based on a unique relationship between the transmission characteristics of the enclosed field and those of the free field, which can be obtained as a correction term based on previous measurements of a known simple source. The radiated sound power of an unknown underwater source in the free field can thereby be obtained accurately from measurements in a non-anechoic tank. To verify the validity of the proposed technique, a mathematical model of the enclosed field is established using normal-mode theory, and the relationship between the transmission characteristics of the enclosed and free fields is obtained. The radiated sound power of an underwater transducer source is tested in a glass tank using the proposed low-frequency extension measuring technique. Compared with the free field, the radiated sound power level of the narrowband spectrum deviation is found to be less than 3 dB, and the 1/3 octave spectrum deviation is found to be less than 1 dB. The proposed testing technique can be used not only to extend the low-frequency applications of non-anechoic tanks, but also for measurement of radiated sound power from complicated sources in non-anechoic tanks.</jats:p>","journal":"Measurement Science and Technology","year":2018,"id":673394,"datarank":0.48283137373023016,"base_score":3.2188758248682006,"endowment":3.2188758248682006,"self_citation_contribution":0.48283137373023016,"citation_network_contribution":0.0,"self_endowment_contribution":0.48283137373023016,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":24,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":772473,"name":"Rui Tang","orcid":"0000-0003-3189-6340","position":1,"is_corresponding":false},{"id":933805,"name":"Qi Li","orcid":"0000-0001-5699-9843","position":2,"is_corresponding":false},{"id":1759396,"name":"Da-Jing Shang","orcid":null,"position":3,"is_corresponding":false},{"id":1759395,"name":"Yi-Ming Zhang","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"The low-frequency sound power measuring technique for an underwater source in a non-anechoic tank","abstract":"<jats:title>Abstract</jats:title>\n                  <jats:p>In order to determine the radiated sound power of an underwater source below the Schroeder cut-off frequency in a non-anechoic tank, a low-frequency extension measuring technique is proposed. This technique is based on a unique relationship between the transmission characteristics of the enclosed field and those of the free field, which can be obtained as a correction term based on previous measurements of a known simple source. The radiated sound power of an unknown underwater source in the free field can thereby be obtained accurately from measurements in a non-anechoic tank. To verify the validity of the proposed technique, a mathematical model of the enclosed field is established using normal-mode theory, and the relationship between the transmission characteristics of the enclosed and free fields is obtained. The radiated sound power of an underwater transducer source is tested in a glass tank using the proposed low-frequency extension measuring technique. Compared with the free field, the radiated sound power level of the narrowband spectrum deviation is found to be less than 3 dB, and the 1/3 octave spectrum deviation is found to be less than 1 dB. The proposed testing technique can be used not only to extend the low-frequency applications of non-anechoic tanks, but also for measurement of radiated sound power from complicated sources in non-anechoic tanks.</jats:p>","is_dataset_classified":null,"base_score":3.2188758248682006,"endowment":3.2188758248682006,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19162232","pmcid":null,"openalex_id":"https://openalex.org/W2793936147","authors":[],"funders":[{"funder_name":"National Natural Science Foundation of China","grant_id":"11504065","title":null}],"total_grants":1,"fwci":1.9668,"citation_percentile":0.83848093,"influential_citations":0,"citation_trend":[{"year":2018,"count":1},{"year":2019,"count":3},{"year":2020,"count":3},{"year":2021,"count":3},{"year":2023,"count":2},{"year":2024,"count":7},{"year":2025,"count":4},{"year":2026,"count":1}],"oa_status":"bronze","license":"https://iopscience.iop.org/info/page/text-and-data-mining","oa_locations":[{"url":"https://iopscience.iop.org/article/10.1088/1361-6501/aa9f6e/pdf","host_type":"journal"},{"url":"https://iopscience.iop.org/article/10.1088/1361-6501/aa9f6e/pdf","host_type":"publisher"},{"url":"http://stacks.iop.org/0957-0233/29/i=3/a=035101/pdf","host_type":"publisher"},{"url":"http://stacks.iop.org/0957-0233/29/i=3/a=035101?key=crossref.9028dfa5d0f9a4f1e0c12c49cff26dbc","host_type":"publisher"},{"url":"https://iopscience.iop.org/article/10.1088/1361-6501/aa9f6e","host_type":"publisher"},{"url":"https://doi.org/10.1088/1361-6501/aa9f6e","host_type":"journal"}],"fields_of_study":["Underwater Acoustics Research","Acoustic Wave Phenomena Research","Flow Measurement and Analysis"],"mesh_terms":[],"keywords":["Anechoic chamber","Acoustics","Underwater","Sound power","Free field","Effective radiated power","Critical distance","Narrowband","Octave (electronics)","Power (physics)","Sound transmission class","Physics","Sound (geography)","Optics","Geology"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Life below water"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-16T13:17:35.502096Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}