Single base station-based positioning system and method

Abstract

Embodiments of the invention provide a single base station-based positioning system and method. The system comprises a base station and a label, wherein the base station comprises a positioning moduleand array antennas; the positioning module is connected with the array antennas; the label is used for receiving and transmitting wireless signals so as to realize information interaction with the base station; the array antennas are used for obtaining measurement distances from the label to the array antennas and signal phases according to a distance measurement and phase measurement algorithm;the quantity of the array antennas is greater than or equal to 2; the positions of the array antennas are non-collinear; the distances between adjacent array antennas are preset values; and the positioning module is used for obtaining angle information of the label relative to the base station according to the signal phases on the basis of a given error criterion and obtaining a position of the label relative to the base station according to the angle information and the measurement distances. According to the single base station-based positioning system and method, positioning can be realizedby using a single base station and a plurality of antennas, so that the scale and cost of the system are reduced, and the positioning precision, positioning speed and system stability are improved.

Description

technical field [0001] The present invention relates to the field of positioning technology, in particular to a positioning system and method based on a single base station. Background technique [0002] With the advent of the Internet of Everything era, applications based on location awareness have attracted more and more attention, and high-precision location information has brought more and more convenience to people. The Global Positioning System (GPS) has the characteristics of wide coverage in outdoor environments, but the positioning accuracy is generally in meters or above, which cannot meet the needs of high-precision positioning. At the same time, satellite signals are easily affected by buildings, trees and other obstructions and urban multipath environments. Influenced by this, the positioning accuracy drops sharply or even cannot be positioned. [0003] At present, the positioning technology is developing rapidly, and the positioning system still has a relative...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in solving the signal angle of arrival based on phase difference, such as the strict requirement that the antenna spacing is less than half the signal wavelength, the antenna position requirements are relatively neat, the angle measurement cannot achieve three-dimensional full coverage, the positioning accuracy is low, and the hardware system complexity is high.

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