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Validation of Synthetic Regional Gravity Field Models. This research will further develop the theoretical and practical methods required to test any model of the Earth's gravity field. Previously, geodesists have had to rely on analytical error estimates, usually based on observed data. A synthetic Earth gravity model avoids this scenario by giving an exact validation technique of the methods used. The synthetic model will allow users of geoid models (e.g., for GPS heighting) to have much mor ....Validation of Synthetic Regional Gravity Field Models. This research will further develop the theoretical and practical methods required to test any model of the Earth's gravity field. Previously, geodesists have had to rely on analytical error estimates, usually based on observed data. A synthetic Earth gravity model avoids this scenario by giving an exact validation technique of the methods used. The synthetic model will allow users of geoid models (e.g., for GPS heighting) to have much more confidence in their results. When used with a precise geoid model, GPS is faster and cheaper than conventional spirit-levelling, offering around 800% productivity gains. Read moreRead less
Next generation global navigation satellite systems ambiguity resolution. In the next five years, four new satellite-based navigation and positioning systems, called Global Navigation Satellite Systems (GNSS), will come to challenge/complement the well-known US global positioning system (GPS). In order to get the highest accuracy and most reliable results from these GNSSs, a procedure known as ambiguity resolution (AR) is essential. This collaborative project will bring Professor Peter Teuniss ....Next generation global navigation satellite systems ambiguity resolution. In the next five years, four new satellite-based navigation and positioning systems, called Global Navigation Satellite Systems (GNSS), will come to challenge/complement the well-known US global positioning system (GPS). In order to get the highest accuracy and most reliable results from these GNSSs, a procedure known as ambiguity resolution (AR) is essential. This collaborative project will bring Professor Peter Teunissen, the inventor of the famous LAMBDA method that is currently used in all GPS AR software, to Australia to work on AR for a combined new GNSS AR solution that is also optimised for Australian users. Read moreRead less