Development of GNSS-based Transportation Infrastructure for Intelligent Transportation System

The use of Global Navigation Satellite System (GNSS) is taking off, and there is a rising demand to develop a new infrastructure to optimize use of GNSS for land transportation. In South Korea, there is an on-going R&D project on developing GNSS-based transportation infrastructure for land transport applications, which has started in 2008 and many research institutes and universities take parts in this project. The goal of the project is to test operate the developed infrastructure system successfully until 2014. Thus, in this research, current issues in developing GNSS-based land transportation infrastructure were examined and investigated the preliminary performance of the system when it is used for land based positioning. Also, we evaluate performance of Real-Time Network RTK corrections, such as carrier phase corrections and master-auxiliary corrections by analyzing the residual error of true correction at user position and generated corrections for static users.