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Passive intelligent tracking and positioning method and system, storage medium and tracking and positioning terminal

A positioning method and passive tracking technology, applied in baseband system components, services based on location information, channel estimation, etc., can solve problems such as poor robustness, low tracking and positioning accuracy, and limited estimation accuracy.

Active Publication Date: 2020-08-28
XIDIAN UNIV
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Problems solved by technology

[0004] (1) The existing Dynamic-MUSIC system, IndoTrack system, etc. only use a single channel parameter (signal angle of arrival or Doppler frequency shift) to perform passive passive tracking and positioning of the human body, which is limited by the estimation accuracy of a single channel parameter. Low positioning accuracy and poor robustness
[0005] (2) The existing Dynamic-MUSIC system, IndoTrack system, etc. only use a small number of Wi-Fi devices for passive passive tracking and positioning of the human body. Limited by the number of Wi-Fi devices, the tracking and positioning accuracy is low and the robustness poor

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  • Passive intelligent tracking and positioning method and system, storage medium and tracking and positioning terminal

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[0068] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0069] Aiming at the problems existing in the prior art, the present invention provides a passive passive intelligent tracking and positioning method, system, storage medium, and tracking and positioning terminal. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0070] like figure 1 As shown, the passive tracking intelligent positioning method provided by the present invention comprises the following steps:

[0071] S101: Collect CSI information through existing Wi-Fi equipment;

[0072] S102: Extract the dynamic propagation path of each multipath signal through the ...

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Abstract

The invention belongs to the technical field of wireless communication and artificial intelligence, and discloses a passive intelligent tracking and positioning method and system, a storage medium, atracking and positioning terminal and Wi-Fi equipment for collecting CSI information. The method comprises: extracting a dynamic propagation path component of each multipath signal by an inter-antennaCSI conjugate multiplication algorithm; estimating the signal parameters of the dynamic propagation path of each multipath signal by a channel parameter estimation algorithm; in combination with an artificial intelligence algorithm, each Wi-Fi device independently estimating a human body motion trail; and fusing the human body motion trails obtained by different Wi-Fi devices in the step 4 by using a multi-device motion trail fusion algorithm. According to the method, multi-channel parameter combination is used for tracking the human body motion trail, and an artificial intelligence algorithmis combined, so that the problems of low precision and poor robustness in the prior art are avoided. According to the invention, a plurality of Wi-Fi devices are combined to carry out human body motion trail tracking, the problem of low human body tracking and positioning precision in the prior art is avoided, and the indoor human body passive tracking and positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of artificial intelligence and wireless communication, and in particular relates to a passive passive intelligent tracking and positioning method, system, storage medium, and tracking and positioning terminal. Background technique [0002] In recent years, the passive passive tracking and positioning technology that does not carry any equipment has attracted much attention. It aims to track and locate the human body indoors. Specific applications include the elderly, patient safety monitoring, smart home, etc. Great development potential and very broad application prospects. Most of the existing indoor target tracking methods require the target to carry a special device or a wearable device, but it is unrealistic to carry the device in some cases. Existing passive trajectory tracking and positioning technologies include ultrasonic, infrared, LED visible light, Wi-Fi, etc. At present, the research on Wi-Fi-...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/029H04W4/02H04L25/02
CPCH04L25/0204H04W4/023H04W4/029
Inventor 王勇齐英华宫丰奎
Owner XIDIAN UNIV
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