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A precise indoor positioning method

An indoor positioning and precise technology, applied in navigation, instrumentation, surveying and navigation, etc., can solve problems such as poor positioning accuracy, node ranging error, and other signal interference, achieving convenient positioning, accurate positioning results, and a wide range of applications Effect

Active Publication Date: 2021-10-29
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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  • A precise 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 a precise indoor positioning method, which is designed to solve the technical problems that the existing similar methods are easily interfered by other signals, and there are errors in node distance measurement, resulting in poor positioning accuracy. The main point is that the indoor positioning method uses the correlation between objects 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 matrix; then the correlation matrix is ​​centered and decomposed to obtain The relative position distribution of each point in space; finally, using the mirror transformation, the relative coordinates of the nodes are converted into absolute coordinates, so as to realize indoor positioning. The indoor positioning method only needs to know the absolute coordinate positions of a small number of reference nodes in the space, and can realize the correct indoor positioning without interference; at the same time, the indoor positioning method proposes a spatial relative coordinate based on the reference nodes, A technology that converts into space absolute coordinates to achieve accurate indoor positioning.

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...

Claims

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Application Information

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