Compensation method and device for indoor positioning wireless signal and positioning method and device

Abstract

The embodiment of the invention discloses a compensation method and device for an indoor positioning wireless signal and a positioning method and device. The compensation method and device for the indoor positioning wireless signal comprises the steps of obtaining a target image sent by a terminal, received signal strength of the wireless signal and identification information of a transmitting node corresponding to the wireless signal; determining the number of people in the target image; determining target body penetration loss according to the number of the people and a specific absorption rate; obtaining transmitted signal strength according to the identification information; obtaining target path loss according to a compensation relationship that the transmitted signal strength is equal to the sum of the received signal strength, the target path loss and the target body penetration loss, wherein the target path loss comprises free space loss of the wireless signal and loss resulting from barriers except the people. Through application of the scheme, the RSS (Received Signal Strength) is further compensated, and the positioning precision based on an RSS positioning method is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a compensation method and device for indoor positioning wireless signals and a positioning method and device. Background technique [0002] Wireless signal propagation depends to a large extent on the geometric and conductive properties of the environment. Compared with the outdoor environment, the indoor environment is complex and changeable. During the indoor propagation of wireless signals, it is vulnerable to factors such as the position of furniture, the structure of building materials, and the density of people in the room. Influenced by factors such as distribution and distribution, phenomena such as reflection, diffraction, and scattering appear, and these will cause different degrees of signal attenuation, making the transmitted signal strength and the received signal strength RSS measured by the terminal re (RSS, Received SignalStrength) There is a large error betw...

AI Technical Summary

Problems solved by technology

[0005] However, in existing indoor wireless signal compensation methods, for indoor path loss, on the basis of free space loss, the additional loss factor generally only considers the loss caused by obstacles other than people, such as different types of indoor walls and The loss caused by the floor, without considering the personnel factor, makes the RSS compensation insufficient, resulting in the inaccurate distance between the signal transmitting node and the terminal calculated based on this, and further, the positioning accuracy based on the RSS positioning method is not high

Images