Wireless locator calibration method and device

Abstract

The invention discloses a wireless locator calibration method and device. The method comprises the following steps: taking the coordinate position of a signal emission source as a circle center, determining a plurality of concentric circles, and enabling each concentric circle to correspond to one signal intensity of a wireless signal emitted by the signal emission source; according to the sequence from the circle center to the circumference, a calibration point with the shortest distance is selected from each concentric circle in sequence, the wireless positioner is moved to the selected calibration point, and the signal intensity of the wireless signal emitted by the signal emission source and received by the wireless positioner at each calibration point is measured; fitting to obtain a moving track curve on a two-dimensional plane according to the signal intensity of the wireless signal emitted by the signal emission source and received by the wireless locator at each calibration point and the distance from each calibration point to the signal emission source; and according to the movement track curve on the two-dimensional plane, determining the movement track of the calibration personnel for calibrating the wireless positioner on the ground. According to the invention, the calibration process of the wireless locator can be simplified, and the time consumed by calibration is saved.

Description

technical field [0001] The invention relates to the technical field of wireless mobile communication, in particular to a calibration method and device for a wireless locator. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Wireless positioning refers to the measurement of the characteristic parameters of the wireless signal received by the mobile terminal in the wireless mobile communication network, using the measured wireless signal data, and using a specific algorithm to estimate the geographical location of the mobile terminal. The wireless locator is a device for wireless positioning of mobile terminals. Before using it, it is often necessary to calibrate the wireless locator. [0004] The existing wireless locator calibration method is to set calibration points with di...

AI Technical Summary

Problems solved by technology

[0006] An embodiment of the present invention provides a wireless locator calibration method to solve the technical problem that the existing wireless locator calibration method is likely to cause large deviations in the calibration results due to signal attenuation. The method includes: using the coordinates of the signal transmission source The position is the center of the circle, and multiple concentric circles are determined, wherein each concentric circle corresponds to a signal strength of the wireless signal sent by the signal transmitting source; in the order from the center of the circle to the circumference, select a calibration point with the shortest distance from each concentric circle in turn , move the wireless locator to the selected calibration point, and measure the signal strength of the wireless signal received by the wireless locator at each calibration point; according to the signal strength received by the wireless locator at each calibration point The signal strength of the wireless signal sent by the source and the distance from each calibration point to the signal source are fitted to obtain a moving trajectory curve on the two-dimensional plane; according to the moving trajectory curve on the two-dimensional plane, determine the calibration personnel on the ground. Calibration trajectory of wireless locator

[0007] The embodiment of the present invention also provides a wireless locator calibration device, which is used to solve the technical problem that the existing wireless locator calibration method is likely to cause large deviations in the calibration results due to signal attenuation. The device includes: a signal concentric circle determination module , used to determine a plurality of concentric circles with the coordinate position of the signal transmitting source as the center of the circle, wherein each concentric circle corresponds to a signal strength of a wireless signal sent by the signal transmitting source; the signal strength measurement module is used to follow the distance from the center to the circumference In order, select a calibration point with the shortest distance from each concentric circle in turn, move the wireless locator to the selected calibration point, and measure the signal that the wireless locator receives from the signal source at each calibration point. Intensity; the data fitting module is used to obtain a signal in a two-dimensional plane according to the signal strength of the wireless signal received by the wireless locator at each calibration point and the distance from each calibration point to the signal transmission source. The moving track curve on the ground; the calibration moving track determination module is used to determine the moving track for the calibration personnel to calibrate the wireless locator on the ground according to the moving track curve on the two-dimensional plane

[0008] The embodiment of the present invention also provides a computer device, which is used to solve the technical problem that the existing wireless locator calibration method is likely to cause large deviations in the calibration results due to signal attenuation. A computer program that can be run on a processor, and the above wireless locator calibration method is implemented when the processor executes the computer program

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