Precise Positioning (1.01)
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.
Research themes
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
Highlights
1. Professor Peter Teunissen gave a Keynote presentation at the International Symposium on GPS/GNSS 2012 at Xi’an China, titled “GNSS Carrier-Phase Integrity: Challenges and Opportunities”
2. Professor Peter Teunissen was awarded an Honorary Professorship for esteemed contributions to geodetic science by the Institute of Geodesy and Geophysics of Chinese Academy of Sciences, November 2012
3. Professor Peter Teunissen gave a series of seminars at the Chinese Academy of Sciences, the GNSS Centre of Wuhan University, and the School of Geodesy and Geomatics of Wuhan University in China
4. Sandra Verhagen attended and presented at the European Space Agency’s NaviTec 2012 conference in Noordwijk, The Netherlands
5. A new version of LAMBDA software has officially been released (available at gnss.curtin.edu.au)
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This research is unique because it combines all the known Australian expertise on GNSS carrier phase ambiguity resolution; it is based on advanced integer inference theory mastered by only a few; and the research outputs are new and improve quality of GNSS ambiguity resolution based positioning
Project Participants
Research and Education - Curtin University - QUT - RMIT
43pl - AAM - GPSat - Leica - Omnistar - Septentrio
Government - Geoscience Australia - Landgate