Underwater Acoustic Time Delay Estimation Based on Envelope Differences of Correlation Functions
文献类型： 外文期刊
作者： Li, Guodong 1 ; Wu, Jinsong 3 ; Tang, Taolin 1 ; Chen, Zhixin 1 ; Chen, Jun 1 ; Liu, Huang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Joint Lab Deep Blue Fishery Engn, Qingdao 266000, Shandong, Peoples R China
3.Univ Chile, Dept Elect Engn, Santiago 8370451, Chile
关键词： time delay estimation; envelope differences of correlation functions; correlation method; underwater acoustic localization
期刊名称：SENSORS （ 影响因子：3.576； 五年影响因子：3.735 ）
ISSN： 1424-8220
年卷期： 2019 年 19 卷 5 期
页码：
收录情况： SCI
摘要： This paper proposes underwater acoustic time delay estimation based on the envelope differences of correlation functions (EDCF), which mitigates the delay estimation errors introduced by the amplitude fluctuations of the correlation function envelopes in the traditional correlation methods (CM). The performance of the proposed delay estimation method under different time values was analyzed, and the optimal difference time values are given. To overcome the influences of digital signal sampling intervals on time delay estimation, a digital time delay estimation approach with low complexity and high accuracy is proposed. The performance of the proposed time delay estimation was analyzed in underwater multipath channels. Finally, the accuracy of the delay estimation using this proposed method was demonstrated by experiments.
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