CSI-MIMO indoor positioning method and system based on feature value extraction

An indoor positioning and eigenvalue technology, applied in positioning, transmission system, radio transmission system, etc., can solve the problem of low positioning accuracy, achieve the effects of improving accuracy and robustness, improving positioning performance, and improving real-time performance

Active Publication Date: 2018-03-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is: the traditional indoor positioning technology is affected by the multipath effect, so that the positioning accuracy is not high

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  • CSI-MIMO indoor positioning method and system based on feature value extraction
  • CSI-MIMO indoor positioning method and system based on feature value extraction
  • CSI-MIMO indoor positioning method and system based on feature value extraction

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Embodiment Construction

[0050] 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.

[0051] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] Such as figure 1 As shown, the CSI-MIMO indoor positioning method based on feature value extraction provided by the embodiment of the present invention includes the following steps:

[0053] S101: In the offline stage, obtain the CSI matrix of multiple wireless signals of each reference point through the wireless receiver, and each matrix has a label, and establish an offline fingerprint database by extracting the eigenvalue of each CSI matrix;

[0054] S102: In the online matching stage,...

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Abstract

The invention discloses a CSI-MIMO indoor positioning method based on feature value extraction. The method comprises: an offline stage: a wireless receiver (for example, the Intel wireless network card 5300 network card) obtains a reference point CSI matrix, and processes the CSI matrix through a feature value extraction method to establish an offline fingerprint database; and an online matching stage: feature value extraction is performed on the CSI matrix of a to-be-measured point, and estimated position information is obtained through a probability matching algorithm based on KNN. The CSI-MIMO indoor positioning system based on feature value extraction disclosed by the invention uses a WIFI wireless router as a signal transmitter, and uses a mobile terminal provided with a wireless receiver (for example, the Intel wireless network card 5300 network card) to receive electromagnetic signals. The fingerprint information is extracted via a feature value, thereby reducing the computational complexity and the correlation of information, and improving the positioning performance of the indoor position.

Description

technical field [0001] The invention belongs to the technical field of position positioning, and in particular relates to a CSI-MIMO (Channel State Information-Multiple Input Multiple Output) indoor positioning method based on feature value extraction. Background technique [0002] At present, with the development of the Internet of Things, people's demand for fast and accurate information is increasing. Therefore, whether it is large-scale international or small-scale people's life, the application demand for location-based services is rapidly increasing. Based on different application scenarios, positioning technology is divided into indoor positioning technology and outdoor positioning technology. At present, outdoor positioning technology has matured, mainly GPS technology based on satellite navigation. It will be blocked by buildings, so it is not conducive to the realization of indoor positioning. Therefore, as an important part of location-based services, indoor pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/06G01S5/02
Inventor 李辉杨拥军张俊祥张春晖
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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