Effects of Pseudolite Positioning on DOP in LAAS

Quddusa Sultana, Dhiraj Sunehra, Vemuri Satya Srinivas, Achanta Dattatreya Sarma

Deccan College of Engineering and Technology.
JNTUH College of Engineering.

DOI: 10.4236/pos.2010.11003                

Abstract

In this paper, effects on DOP (Dilution of Precision) due to augmentation of Global Positioning System (GPS) with pseudolites are investigated. For this purpose, a typical Local Area Augmentation System (LAAS) scenario is consi-dered by placing pseudolites in various positions. It is found that only properly located pseudolites can improve the DOP. DOP values with two pseudolites located on either side of the run way are found to be the best. Geometric DOP (max) was found to be nearly 4 due to only GPS and came down to approximately 2 due to augmentation with two pseudolites. Implementation aspects of Bayes and Kalman filters while estimating DOP values are also examined.

Keywords

GPS, Bayes Filter, Kalman Filter, DOP, Pseudolite, LAAS

Conflicts of Interest

The authors declare no conflicts of interest.

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