Accurate indoor positioning method

An indoor positioning and accurate technology, applied in measuring devices, instruments, surveying and navigation, etc., can solve problems such as poor positioning accuracy, other signal interference, node ranging errors, etc., to achieve convenient positioning, accurate positioning results, and application range. wide effect

Active Publication Date: 2018-06-29
杨艳华
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Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide a precise indoor positioning method in the field, so that it can solve the technical problems that the existing similar methods are easily interfered by other signals, and there are errors in node ranging, resulting in poor positioning accuracy.

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  • Accurate indoor positioning method

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Embodiment Construction

[0021] Now in conjunction with the accompanying drawings, the structure and use of the present invention will be further described. This indoor positioning method uses the correlation between objects (referring to the actual distance in positioning, that is, the real distance between two points in space) to construct the coordinate distribution of corresponding points in space, and uses the actual distance of each object as the correlation to form a correlation Then the correlation matrix is ​​centered and decomposed to obtain the relative position distribution of each point in space; finally, the relative coordinates of the nodes are converted into absolute coordinates by mirror transformation, so as to realize indoor positioning.

[0022] Such as figure 1 As shown, the specific process of the indoor positioning method is as follows:

[0023] S100: In the conversion process of relative coordinates, the wider the distribution of reference nodes, the more stable the positionin...

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Abstract

The invention relates to an accurate indoor positioning method and is designed for solving the technical problem of poor positioning accuracy caused by the fact that existing similar methods are easily disturbed by other signals and node ranging has errors. The accurate indoor positioning method is characterized in that coordinate distribution of corresponding points in space is constructed according to correlativity of objects, and by utilizing actual distance of the objects as correlativity, a correlation matrix is formed; the correlation matrix is centralized and decomposed, and relative position distribution of the points in the space is obtained; finally, by means of mirror transformation, relative coordinates of the nodes are converted into absolute coordinates, so that indoor positioning is realized. According to the indoor positioning method, all that is required is to know absolute coordinate positions of a small number of reference nodes in the space, and indoor positioning can be realized accurately without interference; meanwhile, according to the indoor positioning method, a technology of realizing accurate indoor positioning by converting space relative coordinates ofthe reference nodes into space absolute coordinates is provided.

Description

technical field [0001] The invention relates to an internal positioning method of wireless technology, which is a precise indoor positioning method. Background technique [0002] Indoor positioning technology has not been valued for a long time because of its application scenarios and accuracy requirements. However, with the development of consumer market positioning technology in recent years and the marketization of ultra-precision positioning of UWB (Ultra Wideband, carrierless communication) technology, indoor positioning technology is becoming more and more important. Such existing indoor positioning methods, such as the application number 201610029239.0 disclosed in the Chinese patent literature, the application publication date is 2016.06.15, and the invention name is "indoor positioning system and indoor positioning method"; the indoor positioning method is calculated by electromagnetic field strength and converted to WLAN (Wireless LocalArea Networks, unlimited loc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20
CPCG01C21/206
Inventor 杨艳华杨海锋
Owner 杨艳华
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