Precise positioning for geodetic, surveying and critical real-time machine guidance applications requires a substantial investment in ground infrastructure in the form of continuously operating reference stations (CORS). The federal government, state governments and the government of New Zealand are currently establishing CORS networks in high-value markets. The foundation infrastructure in Australia is funded under the AuScope initiative, and there are now more than 250 stable CORS across Australia and New Zealand as part of this effort.
Among the economic benefits from more precise positioning are:
By 2015, if satellite launches proceed according to plans, there will be up to three times the number of satellites and 4-6 times the number of signals, compared to today’s 50 satellites, on which two-frequency measurements can be made. The more satellites and signals, the better the positioning performance is in terms of accuracy, availability, reliability and integrity. But there are technical hurdles to reach the proposed 2-cm countrywide positional accuracy, particularly around resolving signal processing problems between all of the satellite navigation systems, and the ability to integrate measurements from these systems. Additionally, there’s the need to develop a single network that is available to all end users for real-time positioning across the country.
You can read the National Positioning Infrastructure (NPI) Policy document via ANZLIC, the Spatial Information Council, here [PDF].