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

Abstract

The invention provides optical fiber grating type optical fiber hydrophone-based paved type conformal array sonar equipment, which comprises a laser source array, a time division/space division/wavelength division hybrid multiplexer, an optical fiber grating type optical fiber hydrophone array, an interferometric phase inverter, a dense wavelength division demultiplexer, a phase generated carrier modulator-demodulator and a data generator, wherein the laser source array emits laser beam pulses with various wavelengths; the time division/space division/wavelength division hybrid multiplexer mixes the laser beam pulses and projects the laser beam pulses into the optical fiber grating type optical fiber hydrophone array respectively; the optical fiber grating type optical fiber hydrophone array modulates the laser beam pulses according to a submarine sound signal; the interferometric phase inverter performs the phase conversion of the modulated laser beam pulses; the dense wavelength division demultiplexer demultiplexes and separates mixed interferometric laser beam pulses; the phase generated carrier modulator-demodulator performs corresponding phase detection, photoelectric conversion, digital sampling and digital demodulation of interferometric laser beams; and the data generator generates conformal-array multichannel digital sonar signals.

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 optical fiber grating type 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. T...

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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 using fiber grating type hy

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