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Carrier Phase-Based GNSS: a university research agenda

Chris Rizoz:. Chris Rizoz:. Carrier Phase-Based GNSS: a university research agenda. Chris Rizos Satellite Navigation & Positioning (SNAP) Group, School of Surveying & Spatial Information Systems The University of New South Wales, Sydney, Australia.

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Carrier Phase-Based GNSS: a university research agenda

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  1. Chris Rizoz: Chris Rizoz: Carrier Phase-Based GNSS:a university research agenda Chris Rizos Satellite Navigation & Positioning (SNAP) Group, School of Surveying & Spatial Information Systems The University of New South Wales, Sydney, Australia Civil GPS Service Interface Committee Meeting10-11 February 2003, Melbourne, Australia

  2. GPS R&D: The Big Picture University GPS Research Topics The Australian Scene: CRC & NICTA Directions in SNAP Research Overview

  3. GPS: Space-Based Positioning System of Unequalled Versatility • Geodetic technique --accurate, low-cost, portable, massive ground infrastructure • Surveying tool -- valuable addition to the surveyor's toolkit • Navigation technology --affordable, ubiquitous, impacting on all marine-air-land navigation practice • Consumer electronics -- alter society's view of the world & influence the mobile services provided through wireless technologies

  4. First civilian GPS (geodetic) receivers, early 1980s First Australian GPS control survey, state of South Australia 1985

  5. 1980s: military, surveying & geodesy 1990s: navigation users 2000s: consumer electronics, LBS Evolution of the User Segment This has influenced the R&D trends…So what have the universities been doing?

  6. ‘Geodesy’ the primary driver since the mid-1980s Concentrated in depts of surveying/geomatics Algorithm development… CPH modelling & processing, AR, etc. Applications focus… geodynamics, reference frame, surveying, “kinematic”, etc. UNSW, CUT, UM, RMIT, USA, UT, UC, QUT Australian University GPS R&D (1) Has uni R&D focus evolved with application trends?

  7. Largely CPH-based… PR techniques & apps have been shunned No hardware developments… EE skills lacking No navigation technology ‘research culture’… EE depts totally indifferent to GNSS R&D Industry dominated by SMEs… minor influence on university R&D Can university R&D capability adapt to new challenges? Australian University GPS R&D (2)

  8. Wireless Communications Mobile Computing Mobile Positioning Spatial Database Servers Convergence of Developments Will the Uni R&D agenda reflect such mainstream technologies/apps, or remain focused on niches???

  9. GPS: the “slow burn” technology • At heart of convergence of crucial technologies: GPS the core technology • Low-cost, high-performance of GPS • GPS as infrastructure: a vital utility • Next generation GNSS: modernized GPS, Galileo, etc. • Massive potential for new products & services

  10. Deformation/Geodynamics:GPS HW/SW systems, coms issues, time series analysis, DInSAR/remote sensing, engineering apps, etc. CGPS:Base stn QC/ops, coms issues, web apps, scalability, servers, multi-functionality, new services, non-positioning apps, etc. GPS Meteorology:Ionospheric & tropospheric studies, ground & space-based, interaction with NWM, etc. GPS-Related Research Challenges (1) • "Indirect" GPS:Bistatic radar imaging, multipath analysis, ground & airborne systems, remote sensing apps, etc. • Long-Range Kinematic GPS:Ocean buoy positioning, CGPS apps over long distances, coms issues, etc. • GPS/Glonass/Galileo:Observation modelling, new data processing algorithms, multi-frequency OTF-AR, QC, new apps, receiver customisation, etc.

  11. Precise Navigation:New apps, coms link issues, new instrumentation, new algorithms, etc. Hazard Monitoring:Volcanoes, landslides, structural integrity, ground subsidence, which technology & processing strategies? GNSS Augmentations:WAAS, WADGPS, RADGPS, testing & advice on implementation issues GPS & Internet & Wireless:Internet DGPS, RTK, processing engines, monitoring & control, etc. GPS-Related Research Challenges (2) • Multi-Sensor Systems:GPS+INS, LIDAR, CCD+, MEMS integration challenges. • MSS Applications:Mobile mapping, augmented reality, robotics (guidance/control), etc. • New Technologies:Pseudolites, receiver designs, mobilephone positioning, WLAN, etc. • Telegeoinformatics:LBS, GIS, indoor positioning, apps issues, mobile devices & wireless coms.

  12. GPS expertise concentrated in surveying/geomatics depts., not EE. Applied/practical research is more valued by industry, but CPH-based research provides necessary challenges for academia. Australian GPS R&D is worldclass (although predominantly focused on CPH-based tech/apps). Cooperative Research Centre in Spatial Information (CRC-SI) to be established mid-2003. National ICT Centre-of-Excellence established 2002. The Australian Scene

  13. CRC-SI (1) • Industry, government & university consortium • To begin from mid-2003 • Seven year funding >$4m(cash),$10m(inkind) p.a. • Focus on the science & applications of SI • Five research programs • Seven demonstrator projects • Commercialisation, advanced training & technology transfer from CRC to industry & government partners First opportunity for university GNSS R&D agenda to be shaped by industry/users…

  14. CRC-SI (2) • SME consortium • Public sector agencies: Geosciences Australia, DIGO, DITM, Land Victoria, DOLA, AgWest, etc. • Universities: Univ. of Melbourne, UNSW, Curtin Univ., Charles Sturt Univ. • Industry contributions: ESRI, Intergraph, Raytheon, and others • Headquarters at Univ. of Melbourne • Research programs headed by university researchers • Demonstrators link research to integrated outcomes

  15. CRC-SI (3) • Integrated Positioning & Mapping Systems - Chris Rizos (UNSW) • Metric Imagery as a Spatial Information Source - Clive Fraser (UM) • Spatial Information System Design & Spatial Data Infrastructures - Ian Williamson (UM) • Earth Observation for Renewable Natural Resource Management - Tony Milne (UNSW) • Modelling & Visualisation for Spatial Decision Support - Ian Bishop (UM)

  16. Recent announcement by Federal Government of ICT ‘centre of excellence’ to NSW-ACT consortium. Universities: UNSW, ANU, Sydney Univ. UNSW is lead institution. Others: ACT, DITM, Lend Lease, ... $130m over 5 years (matched by other funds). >200 fulltime researchers & lots of graduate students. Dominated by EE, Telecom Eng. & Comp. Sci. Challenge: how to encourage R&D into SI Technology & Applications? NICTA

  17. Located within the School of Surveying & SIS, Faculty of Engineering, UNSW. Largest and most active academic GPS R&D group in Australia. Specialising in the theory, technology and applications of positioning using GPS and other navigation technologies. Satellite Navigation and Positioning (SNAP) Group http://www.gmat.unsw.edu.au/snap

  18. Project Theme 1 • Indonesian volcano monitoring • Singapore building monitoring • Appin area subsidence monitoring • Mixed receiver networks • Integration of GPS & DInSAR • Tectonic & geomorphological interpretation of ground deformation • Meteorological studies • Time series analysis

  19. Project Theme 2 • CPH-based GPS/Glonass/ Galileo positioning • Stochastic modelling • Ambiguity resolution & validation • INS data modelling • PL data modelling & issues • Integration of GPS & INS & PL • Integration of navigation & image sensor systems, & associated HW issues • Kalman filtering algorithms/SW

  20. Project Theme 3 • RTK-GPS, single & network-based • Algorithms for kinematic positioning • Single-frequency algorithms • Pseudolite development • Receiver firmware customisation • Industrial applications of RTK • Coms link R&D, incl. Internet, WLAN • Software-defined receivers • Embedded processors & RTOS • GPS Development Kits

  21. Project Theme 4 • GPS & UNSW microsatellite • Indoor positioning options • UNSW demonstrators • GPS & mobilephone positioning • Mobile GIS-based projects • Augmented reality • WLAN & Bluetooth developments • New collaborations

  22. GPS+InSAR deformation monitoring techniques SydNET network-based GPS infrastructure & apps Pseudolite(+ other sensors) technology & applications Receiver firmware customisation Low-cost CPH-based positioning systems High performance, CPH-based kinematic positioning systems Indoor positioning concepts & technologies Indirect GPS signals research Stochastic modelling & fundamental research Current SNAP R&D

  23. SydNET - Nine Site (15Km Radius) QSQR (LPI) PARR (LPI Parramatta) SUTH (Sutherland) HOXT (Liverpool) CAMD (Camden) PENR (Penrith) WIND (Hawkesbury) GALS (Hornsby) MONA (Pittwater)

  24. GPS-only algorithm research nearing the end, some new 'lease-of-life' from Galileo & modernized GPS. Industry wants solutions, hence core CPH competency must be preserved & made available for applications. Niche (precision) applications are still attractive, but will increasingly involve system or sensor integration. Telegeoinformatics applications cannot be ignored, being multi-disciplinary in nature, but more HW based. Days of ‘ivory tower’ R&D at unis are numbered, must seek strategic partnerships for mutual benefit. Uni R&D… From Geodesy to Telegeoinformatics?

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