The Singapore Satellite Positioning Reference Network (SiReNT), is an infrastructure network launched by the Survey Services section of the

Singapore Land Authority The Singapore Land Authority (SLA) is a statutory board under the Ministry of Law of the Government of Singapore. SLA optimises land resources for Singapore's social and economic development. History The SLA was formed on 1 June 2001 when th ...

in 2006. Its purpose is to define Singapore's official spatial reference framework and to support the

cadastral A cadastre or cadaster is a comprehensive recording of the real estate or real property's metes-and-bounds of a country.Jo Henssen, ''Basic Principles of the Main Cadastral Systems in the World,'/ref> Often it is represented graphically in a cad ...

system in SVY21. It is a multi-purpose high precision positioning infrastructure which provides both Post Process Differential Global Positioning System (DGPS)

DGPS Differential Global Positioning Systems (DGPSs) supplement and enhance the positional data available from global navigation satellite systems (GNSSs). A DGPS for GPS can increase accuracy by about a thousandfold, from approximately to . DGPSs c ...

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 at government data centre. Four of the five reference stations are located at the extreme corners of the island of Singapore, with the fifth located in the centre of the island. The four external reference stations are located at

Nanyang Technological University The Nanyang Technological University (NTU) is a national research university in Singapore. It is the second oldest autonomous university in the country and is considered as one of the most prestigious universities in the world by various inte ...

, Keppel Club,

Loyang Luoyang is a city located in the confluence area of Luo River and Yellow River in the west of Henan province. Governed as a prefecture-level city, it borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang ...

, and

Senoko Senoko is located in Sembawang, in the northern part of Singapore. It is most known for Senoko Power Station, which generates and supplies electricity, and the Senoko Fishing Port. Etymology In Franklin and Jackson's ''Plan of Singapore'' (1830) ...

, with the designations SNTU, SKEP, SLOY, and SSEK, respectively. The central location is at

Nanyang Polytechnic Nanyang Polytechnic (NYP) is a post-secondary education institution and statutory board under the purview of the Ministry of Education in Singapore. History Nanyang Polytechnic (NYP) was established on 1 April 1992, and enrolled its first ba ...

, designated by SNYP. 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 from positioning to tracking and monitoring. These GPS reference stations receive satellite signals 24 hours a day and transmit GPS data continuously to the data control centre for storage and processing. Corrections processed from the data are then streamed to subscribed users. SiReNT offers 4 types of services, namely Post Processing (PP) On-Demand, Post Processing (PP) Archive,

Real Time Kinematic Real-time kinematic positioning (RTK) is the application of surveying to correct for common errors in current satellite navigation (GNSS) systems. It uses measurements of the phase of the signal's carrier wave in addition to the information conte ...

(RTK) and low accuracy Differential Global Positioning System (DGPS) to suit different applications. In 2010, SiReNT introduced support for telematics and structural monitoring solutions.

References

{{Reflist Global Positioning System