Direction finding and positioning method and system

Abstract

The invention provides a direction finding and positioning method and system. The method comprises the following steps of: each target in a target module sends a wireless signal to an observation module; the observation module receives the wireless signals emitted by the target module and can also send wireless signals to the target module; the observation module processes the wireless signals transmitted by the target module, extracts information related to the targets from the wireless signals and outputs the information to an observation data preprocessing module; the observation data preprocessing module screens and de-noises the target information uploaded by the observation module, recombines observation data according to the targets and sends the observation data to a fusion positioning module; and the fusion positioning module screens and processes the observation data, and performs fusion positioning to obtain the positions of the target. The direction finding and positioningmethod and the direction finding and positioning system have the advantages of cooperative positioning and high positioning precision.

Description

technical field [0001] The present invention relates to the technical field of wireless positioning, in particular to a direction finding and positioning method and system. Background technique [0002] In the era of the Internet of Everything, not only information such as the time and status of the target is needed, but also the location information of the target. Wireless direction finding is based on the propagation characteristics of electromagnetic waves, the direction that the radio waves reach in the electromagnetic environment where the direction finding device is located, usually in a non-cooperative mode. The usual ultimate goal of wireless direction finding is to determine the "direction of the radiation source" and "the specific position of the radiation source", and then perform wireless positioning according to the "direction of the radiation source" and "the specific position of the radiation source" determined by the direction finding module . [0003] Most...

AI Technical Summary

Problems solved by technology

[0004] At present, iBeacon positioning uses BLE technology, which uses received signal strength information to achieve indoor positioning. The positioning accuracy is 3 to 5 meters, which cannot meet the needs of sub-meter positioning accuracy.

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