Research on location fingerprint towards three-dimensional indoor positioning system

2016 ◽  
Author(s):  
Shan Liu ◽  
Jianping Chai
Keyword(s):  
Three Dimensional ◽  
Indoor Positioning ◽  
Positioning System ◽  
Indoor Positioning System

A New Indoor Positioning System Using Artificial Encoded Magnetic Fields

2017 ◽  
Vol 71 (2) ◽  
pp. 299-316 ◽  
Author(s):  
Falin Wu ◽  
Yuan Liang ◽  
Yong Fu ◽  
Chenghao Geng
Keyword(s):  
Magnetic Fields ◽  
Three Dimensional ◽  
Indoor Positioning ◽  
Global Navigation Satellite Systems ◽  
Positioning System ◽  
Indoor Environments ◽  
Step Method ◽  
Satellite Systems ◽  
Multipath Effects ◽  
Indoor Positioning System

The demand for accurate indoor positioning continues to grow but the predominant positioning technologies such as Global Navigation Satellite Systems (GNSS) are not suitable for indoor environments due to multipath effects and Non-Line-Of-Sight (NLOS) conditions. This paper presents a new indoor positioning system using artificial encoded magnetic fields, which has good properties for NLOS conditions and fewer multipath effects. The encoded magnetic fields are generated by multiple beacons; each beacon periodically generates unique magnetic field sequences, which consist of a gold code sequence and a beacon location sequence. The position of an object can be determined with measurements from a tri-axial magnetometer using a three-step method: performing time synchronisation between sensor and beacons, identifying the beacon field and the beacon location, and estimating the position of the object. The results of the simulation and experiment show that the proposed system is capable of achieving Two-Dimensional (2D) and Three-Dimensional (3D) accuracy at sub-decimetre and decimetre levels, respectively.

Sign in / Sign up

Export Citation Format

Share Document