carrier phase-based gnss: a university research agenda
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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. - PowerPoint PPT PresentationTRANSCRIPT
Carrier Phase-Based GNSS:a university research agenda
Chris Rizoz:Chris Rizoz:Chris Rizoz:Chris Rizoz:
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
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
GPS R&D: The Big Picture University GPS Research Topics The Australian Scene: CRC & NICTA Directions in SNAP Research
Overview
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
First civilian GPS (geodetic) receivers,
early 1980s
First Australian GPS control survey, state of South Australia 1985
Evolution of the User Segment
1980s: military, surveying & geodesy
1990s: navigation users 2000s: consumer
electronics, LBS
This has influenced the R&D trends…
So what have the universities been doing?
Australian University GPS R&D (1)
‘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
Has uni R&D focus evolved with application trends?
Australian University GPS R&D (2) 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?
Convergence of Developments
Wireless Communications Mobile Computing Mobile Positioning Spatial Database Servers
Will the Uni R&D agenda reflect such mainstream
technologies/apps, or remain focused on niches???
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
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
GPS-Related Research Challenges (1)
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.
"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.
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
GPS-Related Research Challenges (2)
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.
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.
The Australian Scene
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.
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…
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
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)
NICTA 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?
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
Satellite Navigation and Positioning (SNAP) Group
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.
http://www.gmat.unsw.edu.au/snap
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
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
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
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
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
Current SNAP R&D
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
Civil GPS Service Committee Meeting10-11 February 2003, Melbourne, Victoria
SydNET - Nine Site
(15Km Radius)
QSQR (LPI)
PARR (LPI Parramatta)
SUTH (Sutherland)
HOXT (Liverpool)
CAMD (Camden)
PENR (Penrith)
WIND (Hawkesbury)
GALS (Hornsby)
MONA (Pittwater)
Uni R&D… From Geodesy to Telegeoinformatics?
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.