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Parametric Study on Wide Area Augmentation System for GPS Accuracy Enhancment
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 28 - Number 9 |
| Year of Publication: 2011 |
| Authors: Dina Zayan, Mohamed Rehan |
10.5120/3412-4761
|
Dina Zayan, Mohamed Rehan . Parametric Study on Wide Area Augmentation System for GPS Accuracy Enhancment. International Journal of Computer Applications. 28, 9 ( August 2011), 46-50. DOI=10.5120/3412-4761
Abstract
GPS systems are used extensively for location determination in outdoor and urban areas. Many location-based services based on GPS system were introduced to the market over the previous few years. The GPS system was found to be of considerable limited accuracy due to several reasons which cause the accuracy to be in a range of 4 meters. Due to this, several accuracy enhancement techniques were proposed and some of them were standardized and deployed. The Wide Area Augmentation System (WAAS) is one these techniques which was developed in order to improve the GPS signal accuracy, availability and integrity. This paper focuses on the WAAS parameters and their performance in different environmental conditions that could cause ionospheric, satellite clock, and ephermis errors which consequently degrade the accuracy of the GPS signal. The WAAS architecture, performance, and main parameters are presented and their performance is simulated and analyzed under storming conditions. In addition, the potential of using the WAAS in combination with augmentation systems is discussed.
References
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