JON FAIRALL On 26 December 2004, a devastating tsunami, triggered by the Great Sumatra-Andaman earthquake, hit Banda Aceh. The wave killed more than 186,000 people in Aceh, but the UN puts the overall casualty count at 229,866. Indonesian government figures cite 513,278 refugees in the weeks following the disaster. Whatever the final toll, it was […]
Search results for "GPS"
The Future of GNSS
WILLIAM GIBBS At least one possible future for the delivery of high-accuracy services from global navigation satellite systems is becoming clearer as time passes. A large number of networks will be available. They will be operated by private enterprise. Surveyors and others in need of centimetre-level positioning have much to look forward to, although it […]
Satellite-Based Augmentation Systems
ROBERT LORIMER America has the wide area augmentation system (WAAS), Europe the European GNSS overlay system (EGNOS), Japan the multifunction satellite augmentation system (MSAS) and India is launching its GPS-aided Geo-augmented navigation (GAGAN) system. They are all satellite-based augmentation systems (SBAS) and are already delivering improved accuracy and integrity for GPS users over much of […]
Mapping the Sydney Underground
JON FAIRALL Tough new penalties await contractors who interrupt electricity and gas supplies in Sydney. The legislation, which allows for five-year jail terms, has passed through the New South Wales Parliament and is now awaiting Royal Assent. It follows a series of power failures in Sydney’s central business district in March. The legislation is a […]
NSW Introduces CORS Network
JONATHON POWERS The NSW Department of Lands is rolling out a $6 million electronic survey infrastructure. When completed, the entire state will be covered by a network of continuously operating reference stations that receive signals from navigation satellites. The project will increase the absolute accuracy of the survey control network. Currently, the survey […]
Best of the blogs 31/01/12
Vector One points us to a history of cadastral mapping in Queensland, as published by the Queensland Government. Well worth a look. http://www.vector1media.com/vectorone/?p=9148 The Telegraph in the UK is reporting that a special summit has been called by the British government to address the issues that outdated maps on consumer’s GPS units are causing. The […]
