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Downhole two-dimensional positioning method combining TDOA and DSTWR based on UWB technology

A two-dimensional positioning and technology technology, which is applied in the directions of location-based services, electrical components, synchronization devices, etc., to reduce construction costs, improve positioning accuracy, and suppress noise and interfere with data.

Pending Publication Date: 2021-06-25
杨亦非
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  • Application Information

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Problems solved by technology

[0006] The problem to be solved by the present invention is to overcome the existing problems of two- or three-dimensional positioning in the existing coal mine accurate personnel positioning technology, and provide a method suitable for the underground environment, which can improve the positioning accuracy of the system, reduce the coupling degree of the system, and improve System stability, improve system capacity and real-time positioning

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  • Downhole two-dimensional positioning method combining TDOA and DSTWR based on UWB technology
  • Downhole two-dimensional positioning method combining TDOA and DSTWR based on UWB technology
  • Downhole two-dimensional positioning method combining TDOA and DSTWR based on UWB technology

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Embodiment Construction

[0080] In order to make the purpose and technical solutions of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0081] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to ha...

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Abstract

The invention discloses a TDOA and DSTWR combined underground two-dimensional positioning method based on a UWB technology, and the method comprises the steps: obtaining the two-dimensional coordinate of a moving point by employing a Chan algorithm by employing a time difference of arrival (TDOA) value when an identification card arrives at a plurality of UWB positioners and a TOA value when the identification card arrives at one UWB positioner, and combining the measurement calculation values of the TDOA and the TOA; wherein a wireless clock synchronization method based on Kalman filtering is adopted to realize TDOA calculation, so that sub-nanosecond-level clock precision is realized; a TOA distance measurement value of a base station is increased, the precision of coal mine underground two-dimensional long-distance positioning is effectively improved, and the problem of unstable precision of an underground single TDOA positioning algorithm is solved; meanwhile, the method can greatly reduce the coupling degree of the system and improve the stability of the system.

Description

technical field [0001] The invention belongs to the technical field of UWB wireless positioning in underground coal mines, and relates to an underground two-dimensional positioning method combining TDOA and DS_TWR based on UWB technology. Background technique [0002] The prior art problems are as follows: [0003] (1) An ADS_TWR-based underground UWB multi-base station positioning area determination method (patent CN 107948920A), the base stations are arranged at equal intervals, and the distance between any two base stations is less than the positioning coverage radius. The problem of realizing two-dimensional positioning in this patent is: if Obtaining the location of the identification card requires the identification card and multiple base stations to complete multiple DS_TWR processes respectively, which takes up too much space and time slot resources, and the system capacity and positioning real-time performance are poor, so one-dimensional positioning can be applied....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/021H04W56/00H04W64/00
CPCH04W4/023H04W4/021H04W56/001H04W56/0075H04W64/00
Inventor 杨亦非杨立新
Owner 杨亦非
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