Positioning and Signal Strength Analysis of IRNSS and GPS Receiver in Plain Terrain along with Foliage Loss

Navigation systems such as Global Positioning System (GPS) play a significant role in determining the user position. Similar to GPS, Indian Regional Navigation Satellite System (IRNSS) is a navigation system indigenously developed by India to meet the country's needs. Presently, six satellites are in orbit - three in inclined geosynchronous orbit and three in geostationary earth orbit. It is essential to evaluate and upgrade the performance of IRNSS continuously for various applications. One such assignment to characterize the performance of IRNSS is mapping of the Jain University global campus geographical area in Bengaluru. The area for mapping includes a terrain with different features such as plain fields, vegetation fields, power distribution substation, dense trees and a terrain with variation in altitude. The purpose of this study is to analyse the performance of both IRNSS and GPS with respect to carrier-to-noise ratio, altitude variation, satellite visibility and GDOP, and the corresponding observations are recorded and plotted with available maps.