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Three-dimensional real-time tracking method and system for indoor moving target

A moving target, real-time tracking technology, applied in the direction of radio wave measurement system, measuring device, instrument, etc., can solve the problems of limited precision, low safety, short operation time, etc., and achieve strong adaptability, high positioning accuracy, and reduced operation the effect of time

Inactive Publication Date: 2016-10-12
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] Aiming at the shortcomings of the prior art such as single application environment, low security and limited accuracy of physical measurement, the present invention proposes a three-dimensional real-time tracking method and system for indoor moving targets. Coherent time-delay estimation and time-delay estimation based on the threshold method are two methods, the calculation time is short, real-time positioning can be performed, and high positioning accuracy and strong adaptability can be achieved

Method used

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  • Three-dimensional real-time tracking method and system for indoor moving target
  • Three-dimensional real-time tracking method and system for indoor moving target
  • Three-dimensional real-time tracking method and system for indoor moving target

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Embodiment Construction

[0041] Such as figure 1 As shown, it is the three-dimensional real-time tracking system involved in this embodiment, which includes several probes made up of a transmitting module and a receiving module, wherein: the transmitting module transmits a positioning detection signal to the object to be positioned after OOK modulation of an ultra-wideband signal, and the receiving module Receive the reflection signal reflected from the object to be positioned; complete the time delay estimation and three-dimensional positioning according to the reflection signal and positioning detection signal, and send the three-dimensional positioning result to the user through network transmission.

[0042] In three-dimensional space, moving objects or people can carry tags. The probe installed on the three-dimensional wall is used to collect positioning information. The number of probes required in three-dimensional space is greater than or equal to four. First, complete the information processin...

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Abstract

The invention relates to a three-dimensional real-time tracking method and system for an indoor moving target. The method comprises the steps: at a transmitting stage, adopting ultra-wideband signals modulated on the basis of OOK (On-Off Keying) as positioning detection signals; at a receiving stage, carrying out TOA (Time Of Arrival) time delay estimation by adopting an energy block and coherence based time delay estimation method or a threshold method based time delay estimation method, and achieving three-dimensional positioning by a TDOA (Time Difference Of Arrival) based three-dimensional positioning method. According to the method and the system, in view of different designs and environmental requirements, two methods, i.e., the energy block and coherence based time delay estimation method and the threshold method based time delay estimation method are adopted, so that the operation time is short, and real-time positioning can be carried out; different three-dimensional positioning methods are adopted according to different numbers of probes, so that relatively high positioning accuracy can be achieved, and the adaptability is relatively high.

Description

technical field [0001] The invention relates to a technology in the field of wireless indoor positioning, in particular to a three-dimensional real-time tracking method and system for an indoor moving target. Background technique [0002] With the rapid development of mobile communication technology, people's demand for positioning and navigation is increasing, especially for large indoor scenes such as airport halls, libraries, supermarkets, etc., to realize real-time monitoring and tracking of the location information of moving targets, which has great Strong practical value. However, limited by factors such as implementation cost, positioning accuracy, and indoor environment, high-precision real-time indoor positioning systems have not yet been widely used. At present, the main indoor wireless positioning technologies include: ultra-wideband positioning technology, radio frequency identification technology and wireless sensor network. Compared with other positioning met...

Claims

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Application Information

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IPC IPC(8): G01C21/20G01S5/10
CPCG01C21/206G01S5/10
Inventor 宫新保王都都罗笑雨
Owner SHANGHAI JIAO TONG UNIV
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