Non line-of-sight propagation state identification and data reconfiguration method of ultra-wide bandwidth wireless positioning

Abstract

The invention relates to a non line-of-sight propagation state identification and data reconfiguration method of ultra-wide bandwidth wireless positioning. According to the non line-of-sight propagation state identification and data reconfiguration method of the ultra-wide bandwidth wireless positioning, a vehicle-mounted wireless receiving base station receives wireless radio waves emitted by a mobile node label worn by a target pedestrian, and obtains information of the distance between the target pedestrian and an automatic guide vehicle; a vehicle-mounted computer visual system achieves identification of the state of the environment on a wireless radio wave broadcasting path to estimate non line-of-sight propagation errors and complete accurate extraction of information of the distance between the target pedestrian and the vehicle-mounted wireless receiving base station; and a low-power single chip microcomputer MSP430 obtains the information of the distance between the target pedestrian and the automatic guide vehicle according to a wireless locating model based on time difference of arrival (TDOA), and is sends the information of the distance to an motion control system of the automatic guide vehicle so that the automatic guide vehicle is enabled to follow motions of the target pedestrian at any time. The non line-of-sight propagation state identification and data reconfiguration method of the ultra-wide bandwidth wireless positioning can initiatively identify the state of the environment on the wireless radio wave broadcasting path and achieve real-time location and track control of the target pedestrian through the wireless locating model.

Description

technical field [0001] The invention belongs to the field of computer engineering, and in particular relates to a non-line-of-sight propagation state identification and data reconstruction method for ultra-broadband wireless positioning. Background technique [0002] In working environments such as kindergartens, golf courses, airports, battlefields, hospitals, and logistics bases, more and more applications for autonomous guided vehicles to follow target pedestrians are required to achieve real-time follow-up tasks for target pedestrians. Through applications such as self-guided vehicles carrying weight or loading materials, self-guided vehicles can greatly reduce or completely replace heavy tasks that require human participation, such as child care, golf carts, airport luggage handling, battlefield material transportation, hospital patient care, and logistics transportation. . Therefore, the precise real-time positioning of target pedestrians shows great development poten...

AI Technical Summary

Problems solved by technology

Electromagnetic guidance needs to lay road signs in advance, the walking path is fixed, it is difficult to change the path, it is difficult to deal with cross paths, the cost is high, and the positioning accuracy is low; the visual guidance can easily change the path, the manufacturing cost is low, and the positioning accuracy is high, but Preset road signs are still required, the walking path is fixed, and it is difficult to deal with cross paths, and it is only applicable to visible conditions; the laser guidance method does not require path setting, but there are still shortcomings such as the need to preset road signs and high manufacturing costs