Ultra-wideband radio over fiber positioning system

Abstract

The invention discloses an ultra-wideband radio over fiber positioning system, and belongs to the technical field of ultra-wideband radio communication. In the positioning system, ultra-wideband sensor nodes are sequentially connected by fibers to form an annular ultra-wideband sensor network distributed in a detection area. Optical time division multiplexing is realized by accurately controlling the lengths of the fibers among the sensor nodes, and ultra-wideband signals detected by different sensors are separated to different time slots of a signal period of an ultra-wideband signal source, so that signals of respective sensor nodes are distinguished and recognized. Ultra-wideband signals carrying position information of an object to be detected are received by the ultra-wideband sensor nodes and then transmitted back to a central processing unit through the fibers to process the positioning signals. Complexity of software and hardware of the sensor nodes can be effectively reduced while ensuring high ultra-wideband positioning accuracy, and the positioning system has low transmission loss and high system stability.

Description

technical field [0001] The invention relates to a positioning system, in particular to an optical-carrying ultra-broadband wireless positioning system, which belongs to the technical field of ultra-broadband wireless communication. Background technique [0002] Precise positioning technology has been widely used in aerospace, intelligent transportation, industrial production, logistics management, home monitoring, anti-terrorism security and other fields. Traditional positioning technologies mainly include GPS positioning, radio frequency identification (RFID) positioning, wifi positioning, ZigBee positioning, infrared positioning, ultrasonic positioning and other positioning technologies. Among them, non-RF positioning technologies such as infrared positioning and ultrasonic positioning are greatly affected by factors such as non-line-of-sight propagation, which limits their application in complex environments. The positioning range of the GPS positioning system is extreme...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing ultra-wideband positioning technology and provide an optical ultra-wideband wireless positioning system, which can effectively reduce the softness of sensor nodes while ensuring the high positioning accuracy of ultra-wideband positioning. Hardware complexity with low transmission loss and high system stability

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