Two-dimensional multi-feature fusion underwater target rapid detection method

Abstract

Provided is a two-dimensional multi-feature fusion underwater target rapid detection method, relating to the underwater target detection. By adopting a transverse multi-domain feature fusion module and a longitudinal multi-source feature fusion module, the method includes performing the Fourier transform domain, fractional Fourier transform domain, wavelet transform domain or other multi-domain transforms for each submarine sound signal; after the sparse decomposition, extracting the main features corresponding to different transform domains, and by means of the multi-domain feature fusion, realizing the transverse multi-domain feature fusion; obtaining a more easily marked single target signal, and improving the detection accuracy; and then, for the complex multi-source captured from different sensors, progressively performing data-level fusion, feature-level fusion, and decision-level fusion to realize the longitudinal feature fusion, and reducing the calculating complexity of a multi-target detection algorithm. A lot of signals are subjected to sparse decomposition compression, the unnecessary computational complexity can be reduced, the detection efficiency is improved, and the energy consumption of underwater target detection equipment can be reduced.

Description

technical field [0001] The invention relates to underwater target detection, in particular to a two-dimensional multi-feature fusion rapid detection method for underwater targets. Background technique [0002] In order to detect and develop marine resources, the development of intelligent underwater acoustic equipment has become the focus of academia and application departments. In the context of the evolution of new underwater acoustic software and hardware technology, the navy urgently needs new target recognition technology as the technical support for the development of measurement and control equipment, sonar systems, etc., so as to improve the accuracy of underwater target detection and provide the navy with highly reliable underwater Defense and early warning equipment. [0003] At present, underwater submarines, ships, torpedoes, frogmen, etc. will widely use target detection technology to apply the detected underwater targets to underwater node communication, detec...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the target signal is submerged in the existing complex ocean environment, and the data volume of the multi-target signal captured is large, and there is mutual interference, which leads to the problem of low accuracy and low efficiency of the underwater target detection method , providing a two-dimensional multi-feature fusion fast detection method for underwater targets

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