This project will capitalise on collaboration with international GNSS/RNSS receiver and software providers to focus on Australia, where a national CORS network will have inter-station distances greater than those used in smaller and more densely populated regions of the world. (Commercial solutions will target these larger and more profitable markets and may therefore not be ideally suited to the Australian context).
Enabling successful and reliable integer ambiguity resolution for multi-GNSS/RNSS positioning in real-time over large distances is a fundamental requirement for any ultra-precise GNSS parameter (position, attitude, time, troposphere, ionosphere) estimation.
Two important research challenges will be addressed that emerge when processing multi-constellation, multi-frequency GNSS/RNSS
data and that underpin the CRCSI program objectives of “instantaneous GNSS/RNSS positioning, anywhere, anytime, with the
highest possible accuracy and the highest possible integrity”
- The development of new integer inference theory to allow the estimation and validation of large integer ambiguity sets under the emerging multi-GNSS/RNSS environment and the proliferation of CORS networks across Australia
- The facilitation of new ambiguity resolution-enabled precise point positioning through improved ionosphere and troposphere modelling
Last quarter saw the completion of an 80km long baseline experiment conducted with 10 multi-GNSS receivers between Curtin University and Muresk Agricultural Institute.
Dr Andy Barnicoat
Program 1 Board Chair
Dr John Dawson
Program 1 Manager