Multi-mode fusion positioning system and method

A technology that integrates positioning and positioning systems. It is used in satellite radio beacon positioning systems, positioning, and radio wave measurement systems. It can solve problems such as incompatibility and hinder indoor positioning applications, achieve high overall positioning accuracy, and improve positioning service quality. , a wide range of effects

Active Publication Date: 2017-11-10
BEIJING UNIV OF POSTS & TELECOMM +2
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Problems solved by technology

However, as mentioned above, various indoor positioning technologies have their own limitations and different technologies require di

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  • Multi-mode fusion positioning system and method

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[0029] 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 through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] In order to better understand the content of the present invention, a brief introduction will be made to common indoor positioning technologies based on smart mobile terminals, including PDR-based, optical sensor-based, Bluetooth-based, WiFi-based, and geomagnetic-based.

[0031] The PDR (Pedestrian Dead Reckoning, Pedestrian Dead Reckoning) positioning algorithm calculates the user's walking trajectory and position based on the walking user's stride length, number of steps, direction and starting point coordinate information. Since it is difficult for mobile devices to accurate...

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Abstract

The invention provides a multi-mode fusion positioning system and method. The method comprises the steps that data associated with the current position and scene is collected through a sensor integrated on a portable intelligent terminal; a plurality of characteristics associated with positioning and/or the scene are extracted in the collected data through a characteristic extracting module device so as to form a characteristic set; each of positioning sub-engines intensively selects the characteristics associated with the sub-engine in the characteristic set of the characteristic extracting module so as to conduct positioning or scene recognition, and the generated results are sent to a positioning fusion device; the positioning fusion device processes the results generated by the positioning sub-engines according to a configured fusion strategy so as to output the estimation of a final position. By means of the multi-mode fusion positioning system and method, switching can be conducted between a plurality of positioning technologies, various emerging positioning technologies can be easy to introduce, the advantages of various positioning technologies can be given full play, the coverage area is wide, and the overall positioning precision is high.

Description

technical field [0001] The present invention relates to positioning technology, in particular to an indoor and outdoor full-space positioning method and system Background technique [0002] In recent years, with the rapid popularization of smart mobile devices and the rapid development of wireless networks, Location-Based Service (LBS) has received more and more attention. At present, outdoor location services mainly rely on Global Positioning System (Global Positioning System, GPS), BeiDou Navigation Satellite System (BeiDou Navigation Satellite System, BDS) and ground mobile base stations to provide positioning and navigation services. Due to the blockage of satellite signals by buildings, indoor positioning cannot rely on GPS and BDS. Existing indoor location services mainly rely on wireless signals, geomagnetic signals, and track inference for positioning calculations. With the increasing number of large supermarkets, activity centers and exhibition halls, people freque...

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Application Information

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IPC IPC(8): G01C21/20G01C21/16G01C21/18G01S5/02G01S19/46G01S19/47
CPCG01C21/16G01C21/165G01C21/18G01C21/20G01C21/206G01S5/0252G01S19/46G01S19/47
Inventor 赵方邵文华王曲陈绍猛罗海勇
Owner BEIJING UNIV OF POSTS & TELECOMM
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