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

A fiber-optic hydrophone and fiber-optic grating technology, applied to transducers, instruments, and radio wave measurement systems used underwater to achieve good stealth performance, simplify complexity, and reduce mutual interference and phase noise levels

Inactive Publication Date: 2011-05-11
INST OF ACOUSTICS CHINESE ACAD OF SCI
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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 hydrophones in the prior art, thereby providing a laying type conformal array sonar device based on fiber grating type optical fiber hydrophones Nano device

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

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Embodiment Construction

[0040] The sonar device of the present invention will be described below with reference to the accompanying drawings and specific embodiments.

[0041] refer to figure 1, The sonar device of the present invention includes laser source array 101, time division / space division / wave division hybrid multiplexer 102, fiber grating type fiber optic hydrophone array 103, interferometric phase converter 104, dense wave decomposition multiplexer 105 , phase generating carrier modem 106 and data generator 107 . Wherein, the multiple laser sources in the laser source array 101 generate laser beam pulses of different wavelengths, and then send them to the time division / space division / wavelength division hybrid multiplexer 102 through an optical fiber; the time division / space division / wavelength division hybrid multiplexer 102 After optically mixing the laser beam pulses of various wavelengths, the mixed laser beam pulses of different timings are irradiated into different line arrays of th...

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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 carriermodulator-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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/52H04R1/44
Inventor 李宇黄海宁李淑秋张春华
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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