Research facility of GPS network-based real-time kinematic positioning system in ISKANDAR Malaysia

Abstract

In equatorial region, severe atmospheric delays occur frequently which leads to difficulties in the ambiguity resolution process and thus affects the accuracy of RTK positioning. The idea of N-RTK system which is to reduce distance-dependent errors, enable high accuracy RTK positioning to be achieved over large area. Hence, the N-RTK system has become popular to be implemented by various agencies and universities. A research-based facility of GPS N- RTK positioning system namely ISKANDARnet has been established by UTM-GNSS and Geodynamics Research Group. ISKANDARnet has been set up with adequately inter-stations distance to assist ambiguity resolution. The data quality of each station is essentially checked by analysing multipath vulnerability. Moreover, generation of real-time network corrections and stability of communication link for inter-stations are monitored to ensure the accessibility of the system. Findings of this study are expected to robust research activities and support the development region of ISKANDAR Malaysia.