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

A multi-feature fusion and underwater target technology, which is applied in the field of rapid detection of underwater targets with two-dimensional multi-feature fusion, can solve the problems of low accuracy of underwater target detection methods, large amount of multi-target signal data, and low efficiency. Reach the effects of reducing the amount of calculation, improving detection efficiency, and reducing energy consumption

Inactive Publication Date: 2017-10-17
XIAMEN UNIV
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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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  • Two-dimensional multi-feature fusion underwater target rapid detection method
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Embodiment Construction

[0026] 1. A fast detection method for underwater targets based on two-dimensional multi-feature fusion

[0027] see Figure 1~3 , the present invention mainly integrates the underwater target detection method of the horizontal multi-domain feature fusion module and the vertical multi-source feature fusion module, the underwater acoustic signal sensor, magnetic sensor or other main sensors of the ocean or seabed, and collects the underwater acoustic communication of the monitoring target. After the signal is preprocessed, the DCT redundant dictionary is initialized, the sparse coefficient is calculated, and the sparse representation of a single signal source is obtained. The chirp signal is used as the basis function to perform sparse decomposition of compressed sensing, and perform horizontal multi-domain feature fusion and vertical multi-signal Source feature fusion.

[0028] In order to solve the influence of random fluctuations in the underwater acoustic channel and the sc...

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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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/02G01S15/87G01S15/88G01S7/539
CPCG01S7/539G01S15/86G01S15/87G01S15/88
Inventor 孙海信苗永春齐洁周明章
Owner XIAMEN UNIV
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