物理学报Issue(15)：1-12,12.DOI:10.7498/aps.64.154303
基于频带分解和距离加权的单矢量水听器浅海被动测距方法研究∗
Source ranging based on frequency band decomp osition and distance weighting using a single acoustic vector sensor in shallow water
摘要
Abstract
A novel method is proposed for the passive source range estimation based on union processing of pressure and particle horizontal velocity. Autocorrelation functions’ warping spectra of pressure and particle velocities have frequency invariability. The spectra of the warped autocorrelation functions of pressure and particle horizontal velocity have the same line spectrum feature, while the spectrum of the warped autocorrelation function of particle vertical velocity possesses both line and broadband spectrum features. Moreover, the warped autocorrelation function’s spectrum of particle vertical velocity has more peaks, and the peak width is broader than those of pressure and particle horizontal velocity. In this paper, source ranges are estimated based on frequency band decomposition and distance weighting, and a guided source with a known range is employed to provide the crucial frequency invariant features. Experimental data in shallow water with an iso-speed profile are used to verify the approach which can reasonably estimate source ranges with the relative errors of the source ranging basically less than 7%. This method can effectively reduce the mainlobe width and background level of the cost function, and can significantly improve the resolution of source range estimation, compared with the results of conventional source ranging approach that uses a single pressure hydrophone.关键词
单矢量水听器/被动测距/频带分解/距离加权Key words
single vector hydrophone/source ranging/frequency band decomposition/distance weighting引用本文复制引用
朱良明,李风华,孙梅,陈德胜..基于频带分解和距离加权的单矢量水听器浅海被动测距方法研究∗[J].物理学报,2015,(15):1-12,12.基金项目
国家自然科学基金(批准号:11125420)和山东省博士基金(批准号：BS2012HZ015)资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant No.11125420), and the Doctoral Fund of Shandong Province, China (Grant No. BS2012HZ015) （批准号:11125420）
