VERIFICATION OF THE EFFECT OF SATELLITE EXCLUSION EFFECT BY VEHICLE BEHAVIOR USING DIFFERENCE IN SIGNAL STRENGTH IN GNSS POSITIONING OF STREET VEHICLES

Abstract

 Positioning technology using a positioning satellite system is required for the development of next-generation ITS technologies such as autonomous driving. The number of positioning satellites that can be captured is small in an environment where high-rise buildings are lined up or the sky is covered with vegetation and signals affected by multipath such as reflected waves and diffracted waves, greatly reduce the positioning accuracy of satellite positioning systems. In this study, the difference in signal strength was obtained for each vehicle behavior whether the vehicle was running or stopped, and the effect of selecting a satellite suitable for positioning calculation was verified. As a result, it was confirmed that the positioning rate and the fix rate were improved depending on the driving direction, driving environment, and vehicle behavior.