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Indoor mobile phone positioning solving method

An indoor positioning and solution technology, which is applied in the field of indoor positioning methods and positioning systems, can solve the problems of high cost, low reliability, and high energy consumption of indoor positioning, and achieve the effects of low cost, high reliability, and low energy consumption

Inactive Publication Date: 2017-05-31
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to improve the accuracy of indoor positioning and the defects of large energy consumption, low reliability and high cost of traditional WiFi indoor positioning technology

Method used

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Embodiment Construction

[0045] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0046] Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

[0047] In the first aspect, an embodiment of the present invention provides an indoor positioning method, including...

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Abstract

The invention discloses an indoor mobile phone positioning solving method comprising the following steps: S1, distributing a plurality of particles around a positioned target to form a particle set, and determining posture and normalization weight of each particle in the particle set by using a particle filter algorithm and an indoor geomagnetic field map according to the received direction of a monitoring sensor of a smart mobile phone and magnetic-field components; S2, performing Kring interpolation on the geomagnetic field map according to the corresponding magnetic-field component tested by the sensor of the smart mobile phone; S3, when a system tests that the target positioning is failure, performing a self-adaption re-sampling strategy, and when the system tests that the positioned target is correct, recovering the former re-sampling process; and S4, determining an estimated position of the positioned target in the indoor geomagnetic field map according to the posture and normalization weight of each particle in a re-sampling particle set. The indoor mobile phone positioning solving method can be used for achieving high indoor positioning accuracy with average of 1-2 m; and in addition, compared with a WiFi indoor positioning technology, the indoor mobile phone positioning solving method is low in energy consumption, high in reliability, and low in cost.

Description

Technical field [0001] The invention belongs to the technical field of indoor positioning and navigation, and in particular relates to an indoor positioning method and a positioning system based on a smart phone platform. Background technique [0002] In recent years, with the rapid development of the Internet of Things and wireless communications, location-based services (LBS) have received more and more attention. For example, the LBS service provided by GPS is widely used in car navigation, medical rescue and other applications. However, when the GPS receiver is working indoors, the signal is hindered by the building, and the positioning accuracy is far from reaching the application requirements. Therefore, the research of high-precision indoor positioning technology has become a research focus in recent years. [0003] Common indoor positioning technologies include indoor wireless positioning technology and research based on geomagnetic positioning technology. Indoor wireless...

Claims

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Application Information

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IPC IPC(8): G01C21/20G01C21/08H04W64/00
CPCG01C21/08G01C21/206H04W64/006Y02D30/70
Inventor 董育宁刘夫玉王新珩
Owner NANJING UNIV OF POSTS & TELECOMM
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