Wireless communication terminal positioning method

Abstract

The invention discloses a wireless communication terminal positioning method. A movable positioning device is used for positioning a target device; the movable positioning device measures the sum of time for propagating a signal from a base station to the target device and time for propagating the signal from the target device to the positioning device; an elliptic line with the position, where the base station and the positioning device are located, as the focus is determined; when a downlink signal and an upper uplink signal which are detected by the target device and the positioning device respectively are directly propagated, it is considered that the target device is on the elliptic line; when the downlink signal and the upper uplink signal which are detected by the target device and the positioning device respectively are not directly propagated, it is considered that the target device is located in the elliptic line; by means of multiple times of measurement, the intersection point of previous ellipses is used as the preferential positioning position for searching for the target device, whether position determining conditions are met or not is measured, and finally the position of the target device is determined. The wireless communication terminal positioning method has the advantage of being high in positioning precision and positioning efficiency.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a positioning method for a wireless communication terminal. Background technique [0002] Positioning technology has a wide range of applications in both military and civilian fields, such as navigation, personnel search and rescue, etc. [0003] At present, the methods of positioning using radio signals include cellular cell positioning method of mobile communication, receiving signal field strength positioning method, fingerprint positioning method, TOA (time of arrival) positioning method, TDOA (time difference of arrival) positioning method, AOA (angle of arrival) positioning method, etc., or a hybrid positioning method of the above positioning methods. [0004] Among them, the cell positioning method uses the location information of the cell where the communication terminal is located to provide a rough location of the target device, and the received signal fie...

AI Technical Summary

Problems solved by technology

[0006] In these existing positioning methods, the positioning equipment used or the base station used as the positioning equipment are all fixed; and, when using the elliptic curve for positioning, it is assumed that the downlink signal from the base station to the target equipment, the target equipment to the positioning The signal of the device or the base station used as the positioning device propagates in a straight line. Since the influence of non-linear propagation is not considered, it will cause positioning deviation in actual use.

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