Single base station array positioning method and device based on multi-carrier frequency

Abstract

The present invention discloses a single base station array positioning method and device based on multiple carrier frequencies, wherein the method includes: deploying user equipment and a base station, and the base station uses an antenna array to transmit and receive at multiple frequency points within an allowable communication frequency band Signals, the base station controls each array element to receive signals in turn through switch switching; after preprocessing, the one-dimensional time-domain signals of multi-frequency points and multi-antennas are combined into signals with three-dimensional characteristics of time domain, frequency domain and air domain, according to the combined signal model The objective function is established, and the likelihood method and learning method are used to optimize the solution, and the position parameters such as angle and distance are obtained by weighting; combined with historical position information and current position parameters, fusion filtering is performed to obtain the final positioning result. The method can reduce cost, improve positioning accuracy and positioning efficiency.

Description

technical field [0001] The present invention relates to the technical field of position positioning, in particular to a single base station array positioning method and device based on multiple carrier frequencies. Background technique [0002] With the emergence and popularization of GNSS (Global Navigation Satellite System), outdoor positioning technology has basically matured, but indoor positioning technology still has many problems to be solved, such as complex indoor environment, multipath, non-visual There are always situations such as distance, signal fading, and interference in the same frequency band. The signal contains a lot of noise, and it is difficult to correctly calculate the position information. [0003] Multi-frequency point transmission can reduce various types of interference, such as channel interference, intermodulation interference, etc., and the system can work under harsh radio wave conditions; Normal communication on the Internet; multi-frequency...

AI Technical Summary

Problems solved by technology

[0004] At present, many indoor positioning methods are based on multiple base stations, and use the local information obtained by different base stations to estimate the node position. Among them, the more base stations, the greater the amount of information, and the more accurate the positioning, but the setting cost also increases; , although single base station positioning can solve the problem of high cost of base station deployment, its positioning accuracy depends entirely on the accuracy of the angle of arrival (AOA) and distance measurement of the base station itself, which needs to be resolved

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