engleski

Tram electric grid influence on GPS reception

In this article we tested the statistical hypothesis that tram electric power lines have significant influence on the quality of the low cost GPS signal reception in urban areas. In order to determine the impact of tram power lines on the quality of GPS signal reception, we have conducted two measurements on the Borongaj tram turnaround in the city of Zagreb. In order to gather the necessary data, we used two GPS receivers that were set up on a tripod at a height of 1.5 m from the ground. GPS receivers were thereby placed at two predefined reference sites with precisely defined geographic coordinates. The first GPS receiver was located near the tram tracks, while the other was located in the parking about 80 meters from the tram turnaround. Information about the location of GPS receivers were recorded every second over a period of 60 and 90 min respectively.

GPS applications in the transport systems ; measuring the qualitly of GPS signal reception ; the impact of tram traffic ; precision of locating GPS receivers in urban areas

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