Real-time self-calibration system and method for position of underwater sound receiver for water surface movable platform

Abstract

The invention provides a real-time self-calibration system and method for the position of an underwater sound receiver for a water surface movable platform. High-precision positioning can be directly performed on the underwater sound receiver in a short-distance and effective open angle range, a feasible and effective technical means is provided for on-site and real-time calibration of a high-precision underwater acoustic positioning tracking measurement array based on the water surface movable platform, and the problem that the positioning precision of the system is reduced due to flow disturbance of an underwater sound receiver of a flexible long cable suspension, hanging or dragging array under high sea / lake conditions and high flow velocity conditions can be solved; and meanwhile, a high-frequency and low-sound-source-level self-calibration beacon design scheme is adopted, so that the problem of sound interference between the calibration device and other underwater sonar can be effectively avoided, and the practicability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of underwater testing and testing, and is mainly used for buoy-based, surface unmanned mobile platforms or ships and other water surface activity platforms that adopt flexible connection deployment (such as hoisting, suspension or towing), and mainly want to solve the problem. The error problem existing in actual use is specifically a system and method for real-time self-calibration of the position of an underwater acoustic receiver for a water surface activity platform. Background technique [0002] When the underwater acoustic tracking and positioning system based on buoys, surface unmanned mobile platforms or ships and other surface activity platforms is installed and installed on the sea / lake, in order to avoid or reduce harsh hydrological conditions, complex water surface conditions, and large background interference noise near the water surface Affected by unfavorable factors, such as unfavorable facto...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned deficiencies in the prior art, the inventor, through R&D and design, proposed a real-time self-calibration method for the underwater position of the flexible-connected underwater acoustic receiver, and designed an ultra-short baseline underwater acoustic spontaneous self-receiving positioning The calibration device scheme can provide a feasible and effective technical approach for the on-site and real-time calibration of the high-precision underwater acoustic positioning tracking measurement matrix based on the water surface activity platform, and can solve the problem of flexible long cables under high sea / lake conditions and high flow rates. The problem that the underwater acoustic receiver of the suspended, suspended or towed array swings with the flow leads to a decrease in the positioning accuracy of the system, so as to ensure the positioning accuracy of the underwater acoustic measurement system; at the same time, a self-calibrating beacon design with high frequency and low sound source level is adopted The scheme can effectively avoid the problem of acoustic interference between the calibration device and other underwater sonars, and can greatly improve the practicability of the device

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