Deployment of GNSS systems has paved the way to the provision of location-based and navigation services with growing accuracy and reliability. The introduction of the Galileo system besides the GPS and GLONASS will constitute a major technological advance of strategical importance for Europe in particular. In such context instruments for investigation in the field of GNSS are perceived as particular important for the research community. In this work we present simulations of GNSS system based on NS2, a well known simulator in the field of telecommunication and network technology. Namely, we have implemented a model for calculation of positioning exploiting the existing NS2 satellite network models. We added the delay model of the ionosphere and the troposphere, the ionosphere and troposphere delay correction model and navigation algorithm. Performance of those models have been compared with those of a well-know reference simulator, i.e. STK. This comparison shows that NS2 models allows to better model location errors due to diurnal TEC variations.
Modeling and Simulation of GNSS with NS2
SURACI, VINCENZO
2005-01-01
Abstract
Deployment of GNSS systems has paved the way to the provision of location-based and navigation services with growing accuracy and reliability. The introduction of the Galileo system besides the GPS and GLONASS will constitute a major technological advance of strategical importance for Europe in particular. In such context instruments for investigation in the field of GNSS are perceived as particular important for the research community. In this work we present simulations of GNSS system based on NS2, a well known simulator in the field of telecommunication and network technology. Namely, we have implemented a model for calculation of positioning exploiting the existing NS2 satellite network models. We added the delay model of the ionosphere and the troposphere, the ionosphere and troposphere delay correction model and navigation algorithm. Performance of those models have been compared with those of a well-know reference simulator, i.e. STK. This comparison shows that NS2 models allows to better model location errors due to diurnal TEC variations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
