Sound velocity profile inversion method based on buoyage

Abstract

The sound speed profile inversion method comprises using several buoys as signal receiving system each composed of a receiving matrix, floating cloth on the sea, receiving matrix connected below the buoy, receiving sound signal of the sound source through the receiving hydrophone, collecting and recording signal data, proceeding inversion method through the duration of the sound source transmitting to receiving matrix, optimizing the calculation through heritage method. It can get the sound speed profile quickly through inversion, with simple structures of the buoys.

Description

(1) Technical field [0001] The invention relates to the technical field of underwater sound propagation, in particular to a sound velocity profile inversion method based on a buoy system. (2) Background technology [0002] In recent years, the inversion of marine environmental parameters of interest using acoustic methods has become a very important research topic. Due to the complex and changeable actual ocean environmental conditions, the acoustic signal will be affected by various environmental factors when propagating in the ocean channel. In order to study the sound propagation in the ocean, it is very necessary to master the propagation law of the acoustic signal in the ocean channel and to obtain the relevant parameters of the ocean environment quickly and effectively. It generally takes a long time to directly measure the relevant parameters of the marine environment with corresponding instruments and equipment. It is a convenient and effective way to quickly obtain...

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Problems solved by technology

At present, some theoretical and experimental researches have been done to invert the sound velocity profile in seawater with acoustic methods ([1] Tolstoy A, Diachok O, Frazer L N. Acoustic tomography via matched field processing, JASA 1991, 89 (3), pP.1119-1127. [2] Goncharov V V, Voronovich A G. An experiment on matched-field acoustictomography with continuous wave signals in the Norway Sea. JASA, 1993, 93 (4), pp.1873-1881), these methods It is generally required that the length of the receiving array is at least comparable to the depth of the sea, so it is necessary to use a longer base array, which is expensive and not easy to use

And because the actual ocean environment is complex and changeable, various complex environmental factors will also affect the received signal, and these factors will often affect the inversion results

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