A distance-finding and direction-finding positioning method between two nodes

Through the ranging and direction finding processing between two nodes, the error vector and its norm are calculated using the two node direction matrix and the coordinated vector to determine the search angle corresponding to the minimum norm, solving the problem of insufficient positioning accuracy of a single node and achieving higher positioning accuracy and reliability.

CN115508772BActive Publication Date: 2025-03-25UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Application Number
CN202211238443.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-11
Publication Date
2025-03-25
Estimated Expiration
2042-10-11

AI Technical Summary

Technical Problem

In the direction finding and positioning technology of a single node, positioning accuracy is affected by factors such as the position distribution of radiation sources in the area and direction finding accuracy, especially when it comes to how to use coordinated positioning between two adjacent nodes.

Method used

Through the ranging and direction finding processing between the two nodes, the two node direction matrix and coordination vector are determined, the error vector and its norm are calculated, the search angle corresponding to the minimum norm is determined, and the position coordinates of the two nodes are determined.

Benefits of technology

The direction finding positioning accuracy of a single node is improved through distance measurement between two nodes, and the accuracy and reliability of positioning are improved.

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Abstract

The present invention belongs to the field of radio positioning technology, and specifically relates to a direction finding and positioning method for ranging between two nodes. In the present invention, two nodes firstly respectively perform direction finding processing on received signals, determine the direction of the wave of the corresponding radiation source, and determine the distance between the two nodes by ranging; then determine the two-node direction matrix and the two-node coordination vector corresponding to each search angle; then determine the error vector and its norm corresponding to each search angle, and determine the search angle corresponding to the minimum norm; then determine the position coordinates of the first node by the two-node direction matrix and the two-node coordination vector corresponding to the search angle corresponding to the minimum norm; finally, determine the position coordinates of the second node by the position coordinates of the first node, the search angle corresponding to the minimum norm and the distance measurement between the two nodes, so as to achieve the purpose of improving the direction finding and positioning accuracy of a single node by using the ranging between two adjacent nodes.
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