Laying type conformal array sonar apparatus based on interference type optical fiber hydrophone

Abstract

The invention provided a paving type conformal array sonar device based on interference optical fiber hydrophone, comprising a laser source array, an interference optical fiber hydrophone time division multiplexing array, a wave-divided mixer, a dense wavelength division demultiplexer, a phase generation carrier wave demodulator and a data generator, wherein the laser source array transmits laserbeam pulses of different wavelengths to be input into the interference optical fiber hydrophone time division multiplexing array; the interference optical fiber hydrophone time division multiplexing array modulates the laser beam pulses according to underwater acoustic signals to generate interference laser beam pulses; the wave-divided mixer processes wave-divided mixing on all interference laser beam pulses; the dense wavelength division demultiplexer demultiplexes and separtes the mixed interference laser beam pulses into a plurality of interference laser beam pulse groups of single wavelength; the phase generation carrier wave demodulation processes phase detection, photoelectric conversion and digital demodulation on the interference laser beam pulses; and the data generator generates multi-path sonar digital signals of conformal array according to the digital demodulation result.

Description

technical field [0001] The invention relates to the field of sonar devices, in particular to a laying type conformal array sonar device based on an interference optical fiber hydrophone. Background technique [0002] Sonar is the most important equipment in ocean detection, and it is widely used in underwater vehicles such as submarines and underwater unmanned detectors. Sonar applied to underwater vehicles is also called submerged sonar equipment. How to improve the target detection capability of submersible sonar equipment has always been the research focus of researchers from all over the world. [0003] In the prior art, the sonar sensors of the submersible sonar equipment are usually installed on the shell of the underwater vehicle. According to the installation method of the sonar sensor on the shell of the underwater vehicle, the submersible sonar equipment can be further divided into non-laying conformal array sonar and laying conformal array sonar. The laid-type c...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that there is no laying type conformal array sonar device adopting interference type fiber optic hydrophone in the prior art, thereby providing a kind of laying type conformal array sonar based on interference type fiber optic hydrophone device

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