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Multi-pose downlink pedestrian position calculation method based on map information assistance

A map information, multi-pose technology, applied in navigation calculation tools, navigation, navigation and other directions through speed/acceleration measurement, to avoid data feature extraction, improve performance, and reduce the complexity of the algorithm.

Active Publication Date: 2020-08-28
CHINA UNIV OF MINING & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

In view of this problem, the present invention aims to provide a multi-attitude downward pedestrian position estimation method based on map information to solve the positioning and error accumulation problems of existing smartphones in typical attitudes, and improve the accuracy and robustness of the PDR system. Rod

Method used

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  • Multi-pose downlink pedestrian position calculation method based on map information assistance
  • Multi-pose downlink pedestrian position calculation method based on map information assistance
  • Multi-pose downlink pedestrian position calculation method based on map information assistance

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Embodiment Construction

[0063] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention and are not intended to limit the scope of the present invention.

[0064] A specific embodiment of the present invention discloses a multi-attitude downward pedestrian position estimation method based on map information, and the specific process is as follows figure 1 shown, including the following steps:

[0065] A multi-attitude downward pedestrian position estimation method based on map information, comprising the following steps:

[0066] Step S1, data processing.

[0067] In addition to the system error caused by its own characteristics, the low-cost sensors embedded in smartphones are also susceptible to environmental interference during use. Th...

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Abstract

The invention relates to a multi-pose downlink pedestrian position calculation method based on map information assistance, and belongs to the technical field of indoor positioning. Firstly, the problem that in the prior art, when a smart phone is used for pedestrian track plotting, equipment posture limitation exists is solved, and a course estimation algorithm is improved by calculating the acceleration integral in the moving direction of a user. A lightweight algorithm, namely a finite-state machine and a decision tree, is used for monitoring and identifying a mobile phone use mode, and behavior characteristic points are sensed by utilizing the characteristics of a gyroscope at a corner, so that the course estimation performance at a linear stage is improved. In addition, the problem ofoverlarge error accumulation caused by course angle deviation during positioning is solved. Map matching and particle filtering technologies are introduced to constrain the course, and improper transfer of particles, track through-wall and the like are limited by sensing behavior landmarks in indoor movement. According to the method, the heading estimation performance and the positioning robustness of the PDR system can be effectively improved, and the pedestrian experience is enhanced.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a multi-attitude downward pedestrian position estimation method assisted by map information. Background technique [0002] In recent years, with the popularity of intelligent mobile devices, people's demand for indoor location-based services has become increasingly strong. Since traditional satellite positioning technology is not available indoors, it is difficult to provide reliable location services for indoor environments, so it is extremely challenging to find a reliable and accurate indoor navigation solution. [0003] Many researchers have made great progress in the research of indoor positioning technology, such as inertial sensors, Bluetooth, geomagnetism, radio frequency identification, ultra-wideband, wireless local area network, computer vision, etc. However, most indoor positioning technologies rely on specific infrastructure, and the deployment and mainte...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20G01C21/00G01C21/16
CPCG01C21/206G01C21/005G01C21/165Y02D30/70
Inventor 陈国良王轩靳赛州张正华
Owner CHINA UNIV OF MINING & TECH
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