CELLULAR BASED GPS ERROR CORRECTION SYSTEM |
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| Calmin D. Scarlett, Leonardo A. Clarke, Ryan Turner, Joseph Skobla |
- Abstract:
- The Micro-tracking System in development at the Physics Department, University of the West Indies is aimed at providing an effective vehicle and asset tracking system which will cover the entire island of Jamaica. The system uses Global Positioning System (GPS) technology in determining location of an asset equipped with a processing unit which was develop at UWI. We aim to improve this system by increasing the accuracy and efficiency of the system and adding navigational capabilities [1]. This is a cost effective GPS error correction system designed to work with a GSM cellular network. Several factors introduce errors in GPS based positioning calculations. This system is geared towards reducing and/or eliminating these errors and thus increasing the accuracy of the GPS system. This system is able to provide the same services as the Differential GPS (DGPS) systems which are in use today. The DGPS systems use Radio Frequency (RF) transmitters to broadcast error correction information. Our system which uses the existing cellular phone network will eliminate the expensive RF transmitter and the limitations associated with them, thus drastically reducing cost and increase efficiency significantly. Errors in the psuedorange measurements affect the quality of the GPS solution. These errors can be modelled, and by using DGPS techniques the errors can be removed. Neural Networks and Kalman Filters show much potential in implementing an elegant and efficient solution to the problem. Mapping information and software is needed for both tracking and navigation. The paper is describing implementation of a mapping-software which is able to pin point accurately the GPS receiver position on a digital map. This software will also implement a route planning algorithm, which will be able to generate the “shortest path”, whether shortest time or shortest distance, from point A to point B by considering distance, number of turns, traffic lights, traffic congestion and other dynamic information.
- Keywords:
- GPS,Cellular Network, Error Correction
- Download:
- PWC-2003-TC1-009.pdf
- DOI:
- -
- Event details
- Event name:
- XVII IMEKO World Congress
- Title:
Metrology in the 3rd Millennium
- Place:
- Dubrovnik, CROATIA
- Time:
- 22 June 2003 - 28 June 2003