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Online cooperative positioning method and system based on Wi-Fi RSS

A technology for co-locating and positioning results, which is applied to services based on location information, services based on specific environments, etc., to achieve the effect of increasing positioning accuracy, enriching positioning information, and improving positioning accuracy.

Active Publication Date: 2020-10-27
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0005] In view of the defects and improvement needs that the existing fusion indoor positioning technology cannot be applied to multiple users requesting positioning at the same time, the present inv

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  • Online cooperative positioning method and system based on Wi-Fi RSS
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  • Online cooperative positioning method and system based on Wi-Fi RSS

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0048] like figure 1 As shown, the present invention provides a kind of online co-location method based on Wi-Fi RSS, and this method comprises the following steps:

[0049] Step S1. For each sub-area of ​​the target area, the mean value of the RSS of all sampling points in the sub-area is used as the area fingerprint of the sub-area, and there are multiple Wi-Fi signal sources in the target ar...

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Abstract

The invention discloses an online cooperative positioning method and system based on Wi-Fi RSS, and belongs to the technical field of communication and wireless networks. The method is characterized by using the RSS of other users requesting positioning at the same time to obtain the cooperative confidence coefficients of all candidate reference points of a target user, so as to enrich positioninginformation without adding extra hardware equipment, so that the positioning precision is improved; integrating the signal distance and the cooperative confidence coefficient of the user, determininga final positioning result of the target user according to the obtained final comprehensive confidence coefficient of the candidate reference points, and improving the positioning reliability and accuracy; eliminating signal sources with low regional acceptance rates or weak overall signal intensity, so that remote signal sources and temporary hotspot sources are eliminated and the positioning precision is improved, wherein such invalid signal sources often bring interference to fingerprint comparison work; and standardizing the signal distance set and the collaborative confidence set of thesystem to eliminate the dimensional influence of the two indexes, so that the positioning accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of communication and wireless network, and more specifically, relates to an online cooperative positioning method and system based on Wi-Fi RSS (Received Signal Strength, received signal strength). Background technique [0002] Positioning technology that can be directly used to locate and track smartphones has been a focus in indoor positioning research. On the one hand, almost everyone these days carries a smartphone every day to enjoy various location-related applications. Smartphones, on the other hand, are equipped with many internal sensors that measure different types of signals, which can be easily leveraged to implement two popular location technologies, fingerprint-based location technology and dead-reckoning-based tracking technology. [0003] Fingerprint-based indoor positioning assumes that each location can be identified by a unique signal vector called a fingerprint. One of the widely used f...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W4/021H04W4/33
CPCH04W4/021H04W4/023H04W4/33
Inventor 王邦周婵欣
Owner HUAZHONG UNIV OF SCI & TECH
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