Indoor Positioning Based on GPS-Repeaters: Performance Enhancement using an Open Code Loop Architecture

Author

Jardak, Nabil ; Samama, Nel

Author_Institution

Groupe Navig., Inst. Nat. des Telecommun., Evry

Volume

45

Issue

1

fYear

2009

Firstpage

347

Lastpage

359

Abstract

Indoor localization systems are now increasingly needed in supporting location-based services (LBS). We carry out a theoretical study of an indoor positioning technique based on sequential switching. It uses available global positioning System (GPS) signals and simple deployment of so-called "GPS repeaters." The delay-lock loop (DLL) architecture of a GPS receiver has been modified into an open DLL to improve indoor positioning performance. A comparison study between simulation results using a standard GPS receiver and an improved one shows that the latter allows submetrical accuracy to be achieved.

Keywords

Global Positioning System; delay lock loops; radio repeaters; GPS receiver; GPS-repeaters; delay-lock loop architecture; global positioning system; indoor localization systems; indoor positioning technique; location-based services; open code loop architecture; Aerodynamics; Computer architecture; Delay; Global Positioning System; Interference; Phase detection; Phase measurement; Repeaters; Satellite navigation systems; Testing;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2009.4805284

Filename

4805284