Positioning and signal strength analysis of IRNSS and GPS receiver in plain and vegetation area

Navigation system such as GPS plays a significant role in determining the user position. Similar to GPS, IRNSS is a navigation system indigenously developed by India to meet the country 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 the IRNSS continuously for various applications. One such assignment has taken up to characterize the IRNSS performance is mapping of a Jain University global campus geographical area. 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 altitude variation. The purpose of the study is to analyse the performance of both IRNSS and GPS with respect to carrier to noise ratio, altitude variation, satellite visibility, GDOP and corresponding observations are recorded and plotted with avaliable maps.