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Ultra-short baseline (USBL) positioning system and method based on rotary element multiplexing

An ultra-short baseline positioning and rotating technology, which is used in radio wave measurement systems, positioning, measuring devices, etc., can solve the problems of insufficient positioning accuracy, difficulty in eliminating actual spacing errors, and complex calibration process, and achieve the effect of improving positioning accuracy.

Active Publication Date: 2019-09-24
SOUTHEAST UNIV
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Problems solved by technology

The distance between primitives is one of the important error sources that affect the traditional USBL positioning system. The traditional multi-element USBL matrix positioning system must accurately calibrate the distance between each primitive before positioning. The calibration process is complicated and it is difficult to eliminate the actual Pitch error, resulting in insufficient positioning accuracy

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  • Ultra-short baseline (USBL) positioning system and method based on rotary element multiplexing
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  • Ultra-short baseline (USBL) positioning system and method based on rotary element multiplexing

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[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the embodiments provided below are only intended to disclose the present invention in detail and completely, and fully convey the technical concept of the present invention to those skilled in the art. The present invention can also be implemented in many different forms, and does not Limited to the embodiments described herein. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention.

[0020] The USBL positioning system based on the multiplexing of rotating primitives includes an underwater beacon module, a USBL receiving matrix module, and a USBL positioning calculation module. The underwater beacon module is used to send underwater acoustic signals to the USBL receiving matrix module. The beacon is loaded on the positioned target; the USBL receiving matrix module inclu...

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Abstract

The invention discloses an ultra-short baseline (USBL) positioning system and method based on rotary element multiplexing, which are particularly suitable for USBL positioning solution of passive cooperative target multi-receiving elements, and multi-array-element radar target solution. The device uses a method of depth information and phase difference ratio to locate and solve an underwater target. The method does not need to find the ranges of a sound source and a target transponder, and can eliminate the influence of a long-distance range error on the USBL positioning. The method eliminates the correction of the element spacing errors of a receiving array, and can completely eliminate the influence of an element spacing error [delta]d and a underwater acoustic signal wavelength error [delta][lambda] on the USBL positioning accuracy. The positioning method is suitable for the case where the target depth is known, and has a high precision at a long distance.

Description

technical field [0001] The invention relates to the field of high-precision underwater positioning, in particular to an underwater passive positioning system and positioning method based on known beacon depths, and is particularly suitable for high-precision positioning of underwater cooperative targets. Background technique [0002] Ultra short baseline (USBL) positioning system is widely used in underwater positioning system due to its small size and convenient use. However, the positioning of the traditional USBL underwater positioning system is based on distance and azimuth angle information for positioning calculation, and its positioning accuracy depends on the accuracy of underwater ranging. With the increase of long-distance ranging error, its positioning error is also increasing. Large, this method is not suitable for underwater long-distance positioning operations. The distance between primitives is one of the important error sources affecting the traditional USBL...

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Application Information

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IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 徐晓苏童金武张涛李佩娟侯岚华翁铖铖李瑶姚逸卿张亮王健王广才王迪朱永云
Owner SOUTHEAST UNIV
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