Laser interference reception type acoustic responder

Abstract

The invention discloses a laser interference reception type acoustic responder which comprises a shell, a power module, an underwater acoustic detection module, a signal conditioning module, a signal processing module, an amplification and rectification module, a gain adjustment module, a power amplification module and a postback transducer. The underwater acoustic detection module, the signal conditioning module, the signal processing module, the amplification and rectification module, the gain adjustment module, the power amplification module and the postback transducer are connected in sequence. The power module is connected with the underwater sound detection module, the signal conditioning module, the signal processing module, the amplification and rectification module, the gain adjustment module, the power amplification module and the postback transducer. The shell is subjected to water seal and the modules are installed in an inner cavity of the shell. The laser interference reception type acoustic responder has linear response characteristics, the amplitude of detected underwater acoustic signals is in linear relation with the magnitude of output signals, inherent nonlinear responses of piezoelectric ceramic are avoided effectively, and meanwhile the laser interference reception type acoustic responder has the advantages of being wide in detection range and high in detection accuracy and can be applied to the technical field of remote acoustic positioning systems, underwater oil exploration secondary positioning and the like.

Description

technical field [0001] The invention relates to a laser interference receiving type underwater acoustic responder. Background technique [0002] With the development and utilization of marine resources and the in-depth study of marine environment, the application of underwater target positioning is becoming more and more extensive. No matter in the long baseline, short baseline or ultra-short baseline positioning system, the underwater acoustic transponder is one of the key components, it can control the underwater sensor to provide the test data of the target according to the needs of the entire positioning system. There are many complex environmental factors in the underwater acoustic channel in the marine environment, such as strong noise, strong fluctuations, multipath interference, and Doppler frequency shift. Therefore, there are special requirements for the accuracy, reliability, and power consumption of the underwater acoustic transponder. However, The traditional p...

AI Technical Summary

Problems solved by technology

There are many complex environmental factors in the underwater acoustic channel in the marine environment, such as strong noise, strong fluctuations, multipath interference, and Doppler frequency shift. Therefore, there are special requirements for the accuracy, reliability, and power consumption of the underwater acoustic transponder. However, The traditional piezoelectric ceramic receiving underwater acoustic transponder has the defect of nonlinear response

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