SiReNT

The Singapore Satellite Positioning Reference Network or in short SiReNT, is a new infrastructure set up by the Survey Services section of the Singapore Land Authority to define Singapore's official spatial reference framework and to support the gazetted cadastral system in SVY21. It is a multi-purpose high precision positioning infrastructure which provides both Post Process Differential Global Positioning System (DGPS) services and Real Time DGPS services. The system supports all types of GPS positioning modes and formats.

SiReNT comprises five GPS reference stations connected to a Data Control Centre (DCC) at Government Data Centre (GDC). The entire set-up is made up of advanced GPS equipment and sophisticated computer hardware, software, communications and network.

SiReNT supports a great variety of applications. It provides data reliability, efficiency and productivity of survey work for land surveyors with the aid of GPS technology. It also offers a wide range of GPS data services with various accuracy levels ranging from metres to centimetres to suit different applications.

These five GPS Reference Stations receive satellite signals 24 hours a day and transmit GPS data continuously to the Data Control Centre (DCC) for storage and processing. The five reference stations are strategically located at extreme corners of Singapore Island - Senoko, Nanyang Technological University (NTU), Keppel, Nanyang Polytechnic and Loyang, so as to provide an island-wide coverage.

SiReNT offers 3 types of service, namely Post Processing (PP) On-Demand, Post Processing (PP) Archive, Real Time Kinematic (RTK) and low accuracy Differential Global Positioning System (DGPS) to suit different applications.