A Laser Interferometric Receiving Underwater Acoustic Transponder

Abstract

The invention discloses a laser interference receiving type underwater acoustic transponder, which comprises a housing, a power supply module, an underwater acoustic detection module, a signal conditioning module, a signal processing module, an amplification and shaping module, a gain adjustment module, a power amplification module and a return switch. The transducer; the underwater acoustic detection module, the signal conditioning module, the signal processing module, the amplification and shaping module, the gain adjustment module, the power amplification module and the send-back transducer are connected in sequence; the power module is connected with the above-mentioned other modules and the send-back transducer respectively ; The housing is watertight and all the above modules are installed in the inner cavity of the housing. The invention has a linear response characteristic, the amplitude of the detected underwater acoustic signal is in a linear relationship with the size of the output signal, effectively avoiding the inherent nonlinear response of piezoelectric ceramics, and also has the advantages of wide detection range and high detection accuracy, and can be used In the technical fields of long-distance underwater acoustic positioning system and secondary positioning of underwater oil exploration.

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...

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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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