Ultra-wideband radio over fiber positioning system

A wireless positioning system, ultra-wideband technology, applied in the direction of radio wave measurement system, positioning, transmission system, etc.

Active Publication Date: 2013-12-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
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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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  • Ultra-wideband radio over fiber positioning system
  • Ultra-wideband radio over fiber positioning system
  • Ultra-wideband radio over fiber positioning system

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Embodiment Construction

[0026] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0027]The basic idea of ​​the present invention is to use optical fibers to connect ultra-wideband sensor nodes to form a ring-shaped ultra-wideband sensor network, receive ultra-wideband pulses carrying position information of the target to be measured and modulate them into the optical domain, and control the optical fiber length To distribute the signals received by different sensor nodes to different time slots in the repetition cycle of the ultra-wideband signal source, and finally extract and identify the ultra-wideband pulse signals of each sensor node in the central processing unit at the far end, and use the TDOA method for waiting Target location calculation.

[0028] The light-borne ultra-broadband wireless positioning system of the present invention, such as figure 1 As shown, it includes a remote central processing unit, an ultra-wideband ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25H04B1/7163G01S5/02
Inventor 潘时龙傅剑斌张方正
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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