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Buoy-based combined baseline acoustic positioning method

A technology of underwater acoustic positioning and buoys, which is applied in positioning, satellite radio beacon positioning systems, radio wave measurement systems, etc., can solve problems affecting the accuracy of underwater acoustic positioning, reduce position errors, improve positioning accuracy, and eliminate impacts Effect

Pending Publication Date: 2020-11-17
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the position of the Beidou receiver is still used as the position of its communication positioning machine, which will cause errors and affect the accuracy of underwater acoustic positioning

Method used

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  • Buoy-based combined baseline acoustic positioning method
  • Buoy-based combined baseline acoustic positioning method
  • Buoy-based combined baseline acoustic positioning method

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Experimental program
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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with accompanying drawing and specific embodiment:

[0022] Such as figure 2 and image 3 As shown, there are 4 sets of buoys 1 deployed on the sea surface, and each set of buoys 1 is equipped with Beidou positioning receiver 2, ultra-short baseline equipment, attitude and azimuth instrument 3 and communication positioning machine 7. figure 1 A schematic diagram of a single buoy base station. The Beidou positioning receiver 2, the attitude and azimuth instrument 3 are connected to the communication positioning machine 7 through a cable 6, and the communication positioning machine 7 is suspended below the buoy platform; the ultra-short baseline equipment includes an ultra-short baseline transceiver array 4 and an ultra-short baseline transponder 6, wherein The ultra-short baseline transceiver array 4 is installed directly below the Beidou positioning receiver 2 on the buoy platform. The coordinate ...

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Abstract

The invention provides a buoy-based combined baseline acoustic positioning method, which comprises the following steps of: installing ultra-short baseline equipment on a buoy to obtain a real-time position of a self-communication positioning machine relative to a buoy platform; installing an attitude azimuth instrument which is used for calibrating the attitude of the ultra-short baseline equipment so as to obtain the real-time absolute position information of the communication positioning machine; in the positioning process, through the ultra-short baseline principle, the buoy estimates the accurate position of a communication positioning machine of the buoy in real time, and the position accuracy of a buoy base station is improved. According to the method, in the positioning process of the underwater vehicle, the ultra-short baseline principle and the long baseline principle are applied at the same time, so that the influence of ocean current on the position of the communication positioning machine is eliminated, and the positioning precision of the underwater vehicle is improved.

Description

technical field [0001] The invention relates to the field of underwater positioning, and mainly relates to a buoy-based combined baseline underwater acoustic positioning method. Background technique [0002] The long baseline positioning system is a commonly used method in the field of underwater positioning, which has the characteristics of long working distance and high positioning accuracy. According to whether the underwater vehicle makes sound, the long baseline positioning system is divided into two modes: active positioning and passive positioning. Both of these two working methods use buoys as positioning base stations. In the active positioning mode, the underwater vehicle sends active positioning signals. After receiving the signals, the buoys deployed in the surrounding waters package and forward their own position information to the shore-based server. The position of the underwater vehicle is calculated by the server; in the passive positioning mode, the buoy s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42G01S19/53G01S5/18
CPCG01S19/42G01S19/53G01S5/186
Inventor 王超张宏滔朱小辉陈伏虎
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP