Automatic measurement method for array gain of acoustic array

By automatically measuring the gain of acoustic waves, the array gain is calculated using the correlation coefficients of signal and noise, the problems of human error and operation complexity in traditional measurement methods are solved, and efficient and accurate automatic measurement is achieved.

CN119644309AInactive Publication Date: 2025-03-18THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Patent Information

Application Number
CN202411889666.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The traditional acoustic-based radius gain measurement method has artificial reading errors and operational complexity, resulting in inaccurate measurement results and inability to achieve automatic measurement.

Method used

An automatic measurement method is proposed, by reading the received signal of the acoustic matrix, performing pulse interception processing, intercepting the target signal and noise signal, performing narrowband filtering and delay filtering, calculating the correlation coefficient between the signal and noise, and generating the acoustic matrix blast gain.

Benefits of technology

The automatic output sound base wave gain is achieved, which avoids artificial reading errors, simplifies operation steps, improves measurement efficiency, and improves the accuracy of measurement results.

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Abstract

The invention provides a method for automatically measuring the gain of an acoustic array, and particularly relates to the technical field of sonar acoustic array performance testing. The method comprises the following steps of: 1, reading a receiving signal of an acoustic array, and performing pulse interception processing on array element time domain data to obtain starting and ending moments of a pulse signal; 2, intercepting a target signal and a noise signal according to the starting moment and the ending moment; step 3, performing narrowband filtering on the target signal and the noise signal according to a set frequency to filter out-of-band noise; 4, setting variable decimal time delay filter parameters; 5, time delay filtering is carried out on the filtered target signal and noise signal, and filter parameters are set according to the target orientation; 6, solving a correlation coefficient of the signal and the noise; and step 7, generating and outputting the gain of the acoustic array. According to the test method, the array gain of the sonar is calculated by measuring the correlation coefficient of the signal and the correlation coefficient of the noise. The measurement process of the array gain is simplified to the greatest extent, and the measurement efficiency is improved.
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