Underwater acoustic signal noise multistage suppression and robust positioning system and positioning method

Abstract

The invention discloses an underwater acoustic signal noise multistage suppression and robust positioning system and a positioning method, relates to an underwater acoustic positioning system and a positioning method, and aims to solve the problems of low reliability of an underwater acoustic link, easiness in causing measurement data loss and poor maneuverability in an existing underwater acoustic positioning system. The system comprises an inertial navigation system, a transponder and an ultra-short baseline system. The inertial navigation system is fixed on the underwater mobile platform and is used for outputting inertial information and real-time speed information to the ultra-short baseline system according to the motion state of the underwater mobile platform; the transponder is used for communicating with the ultra-short baseline system; the ultra-short baseline system comprises a signal processing unit and an ultra-short baseline array, and the signal processing unit receives a response signal transmitted by the transponder through the ultra-short baseline array.

Description

technical field [0001] The invention relates to an underwater acoustic positioning system and a positioning method. Background technique [0002] In recent years, underwater acoustic technology has played an important role in resource exploration, scientific investigation, underwater acoustic communication, submarine monitoring network, and ocean operations. Underwater acoustic positioning is an important research branch of underwater acoustic technology. With its application in military and civilian fields such as underwater target tracking, marine resource development, and positioning and navigation of underwater moving carriers, it is becoming more and more extensive. [0003] Constrained by the marine environment and the working conditions of underwater mobile combat platforms, the propagation of sound waves in water will be affected by high noise, complex multi-channel expansion, and Doppler frequency shift. The link connectivity conditions are poor, and it is difficult...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the low reliability of the underwater acoustic link in the existing underwater acoustic positioning system, easily lead to the loss of measurement data, and the problems of poor mobility, and provide a multi-level suppression of underwater acoustic signal noise and a robust positioning system and method

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