A New Indoor Positioning System Architecture Using GPS Signals

Sensors

Rui Xu¹  Wu Chen¹  Ying Xu¹  Shengyue Ji¹  Kourosh Khoshelham² 

[1] The Hong Kong Polytechnic University, Hong Kong, China; E-Mails:The Hong Kong Polytechnic University, Hong Kong, China;

关键词: GNSS;    indoor positioning;    pseudolite;   

DOI  :  10.3390/s150510074

来源: mdpi

【 摘 要 】

The pseudolite system is a good alternative for indoor positioning systems due to its large coverage area and accurate positioning solution. However, for common Global Positioning System (GPS) receivers, the pseudolite system requires some modifications of the user terminals. To solve the problem, this paper proposes a new pseudolite-based indoor positioning system architecture. The main idea is to receive real-world GPS signals, repeat each satellite signal and transmit those using indoor transmitting antennas. The transmitted GPS-like signal can be processed (signal acquisition and tracking, navigation data decoding) by the general receiver and thus no hardware-level modification on the receiver is required. In addition, all Tx can be synchronized with each other since one single clock is used in Rx/Tx. The proposed system is simulated using a software GPS receiver. The simulation results show the indoor positioning system is able to provide high accurate horizontal positioning in both static and dynamic situations.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.