Professor Chris Rizos
Emeritus Professor

Professor Chris Rizos

Engineering
Civil and Environmental Engineering

Professor of Geodesy and Navigation in the School of Civil and Environmental Engineering

Chris Rizos is an Emeritus Professor in the School of Civil and Environmental Engineering and a co-director of the Satellite Navigation and Positioning (SNAP) Lab at UNSW.

My early fascination with old maps and Australia’s exploring pioneers sparked my own exploration of what we know today as the global navigation satellite technologies of the future. The bulk of my research is therefore in Global Navigation Satellite Systems (GNSS), and their applications, which extend across the whole spectrum of uses from Navigation to Geodesy. With over 20 years of service to some of the most prominent international geodetic organisations, I have had the opportunity to be part of the evolution of a field that has considerable global impact.

As a big picture thinker I have watched Geodesy rapidly evolve with its tools and datasets helping geoscientists monitor global change (including natural and climate change), changes in the environment (to ice sheets and atmosphere) and geohazards (volcanos and earthquakes), and surveyors and engineers applying these technologies from small-scale building works to international mapping projects. Through my research, my aim has been to “spatially enable” all aspects of life, through the further development of technologies and systems that provide continuous, seamless, high accuracy positioning of objects, people and every feature on the surface of the Earth.

Education

PhD (Satellite Geodesy), UNSW, 1980
BSurv (Honours), UNSW, 1975

Research Interests

Professor Rizos’s expertise and research interests include:

  • Geospatial technology, modern geodesy technologies and applications, digital mapping
  • GNSS and geospatial information management policy
  • Technology and application of satellite-, wireless- and inertia-based sensors for high accuracy positioning
  • GNSS for all classes of uses from navigation to geodesy
  • GNSS positioning infrastructure, geodetic and height datums
  • Professor Rizos has supervised to completion over 35 PhD and 8 Masters in Engineering students, and currently supervises 2 PhD students in the research areas of: Geoid studies in Costa Rica, Radar remote sensing for archeology applications

Projects he is currently looking for students to undertake:

  • Geodetic Infrastructure & Reference Frames: International reference frame & scientific geodetic applications; new Australian geodetic datum studies; ground deformation monitoring & modelling; design of permanent GNSS reference networks; opportunities of Satellite Based Augmentation Systems (SBAS); new IGS products & services; impact & opportunities of multi-constellation GNSS.
  • High Accuracy GNSS Systems, Algorithms & Applications: GNSS receiver design; GNSS measurement modelling; open-source Precise Point Positioning (PPP) techniques; low-cost GPS sensors for structural monitoring and other applications; GNSS survey systems; algorithms & systems for high performance (accuracy & integrity) machine guidance applications; testing the Japanese Quasi-Zenith Satellite System (QZSS) augmentation signals; advanced/cooperative-ITS.
  • Non-Satellite Navigation & Positioning: Augmenting GNSS with inertial sensor technology; Locata terrestrial positioning system; indoor positioning; WiFi-based positioning; attitude determination; integration of multi-sensor, RFID; personal navigation; multi-sensor integration.
  • Other Geospatial Technologies, Systems & Applications: GNSS reflectometry, GNSS-based atmospheric remote sensing; airborne & terrestrial laser scanning; UAV mapping systems & applications; CubeSat payloads & missions; vehicle-based mapping; vehicle-based positioning systems for highly automated driving systems.

Professor Rizos has been researching the technology and high precision applications of GPS since the mid-1980s, and has authored or co-authored over 650 journal and conference papers across the technological and scientific fields of geodesy, satellite oceanography, GPS and precise navigation (view list at http://research.unsw.edu.au/people/professor-chris-rizos/publications).

Grants

Professor Rizos has been a CI or PI on over 30 Australian Research Council (ARC) grants since 1995. In the last decade or two he has been a CI on research grants that have included 10 from the ARC; 3 from the CRC for Spatial Information (CRCSI); 2 from the Australian Space Research Program; and 4 from UNSW or federal government schemes; for a total value of over $6M.

Professor Rizos currently is a CI on two ARC grants:

  • Trustworthy Positioning for Next Generation Intelligent Transport Systems, Australian Research Council, Discovery, 2017-2020, $460,000
  • Tracking Formation-Flying of Nanosatellites Using Inter-Satellite Links, Australian Research Council, Discovery, 2019-2022, $390,000

Awards

  • Alexander von Humboldt Fellowship, 1981-83
  • Senior Fellow, Nanyang Technological University (NTU), Singapore, 1999
  • Fellow, Japan Society for the Promotion of Science, 1999, 2003
  • Honorary Professor, Wuhan University, China, 2006
  • Excellence & Eminence Award in Spatial Information, Surveying & Spatial Sciences Institute, 2013

Outreach

Professional Affiliations/Organisations

  • International Association of Geodesy, Fellow
  • Australian Institute of Navigation, Fellow
  • US Institute of Navigation, Fellow
  • Surveying & Spatial Sciences Institute, Member

Editorial Boards

  • GPS Solutions, 2002 - present
  • Journal of Geospatial Engineering, 2002 - present
  • Journal of Global Positioning Systems, 2003 - present
  • Inside GNSS, 2005 - present
  • Sensors, 2019 - present
  • Journal of Applied Geodesy, Editor-in-chief, 2008 - present

Current Service Roles

  • International Union of Geodesy & Geophysics (IUGG), President-elect, 2019-2023
  • National Committee for Earth Sciences of the Australian Academy of Science, Member, 2015-2023
  • National Committee for Space and Radio Sciences of the Australian Academy of Science, Member, 2016-2024
  • International Centre for Research & Development of Satellite Navigation in S.E. Asia (NAVIS), Hanoi, Vietnam, Member, Executive Committee, 2012 - present
  • National Satellite Navigation Technology Symposia, Co-organiser and member of Organising Committee in 1993, 1995, 1997, 1999, 2001, 2003, 2006, 2007, 2009, 2011, 2013, 2015, 2016, 2018, 2020

 

Phone
(+61 2) 9385 4205
Location
Civil Engineering Building (H20) Level 4, Room CE415 Kensington Campus
  • Journal articles | 2020
    Hu C; Benson CR; Qiao L; Rizos C, 2020, 'The validation of the weight function in the leading-edge-derivative path delay estimator for space-based gnss-r altimetry', IEEE Transactions on Geoscience and Remote Sensing, vol. 58, pp. 6243 - 6254, http://dx.doi.org/10.1109/TGRS.2020.2975817
    Journal articles | 2019
    Hu C; Benson C; Park H; Camps A; Qiao L; Rizos C, 2019, 'Detecting targets above the earth's surface using GNSS-R delay doppler maps: Results from TDS-1', Remote Sensing, vol. 11, pp. 2327 - 2327, http://dx.doi.org/10.3390/rs11192327
    Journal articles | 2019
    Hu C; Benson CR; Rizos C; Qiao L, 2019, 'Impact of Receiver Dynamics on Space-Based GNSS-R Altimetry', IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 12, pp. 1974 - 1980, http://dx.doi.org/10.1109/JSTARS.2019.2910544
    Journal articles | 2019
    Rizos C; Yang L, 2019, 'Background and recent advances in the locata terrestrial positioning and timing technology', Sensors (Switzerland), vol. 19, http://dx.doi.org/10.3390/s19081821
    Journal articles | 2017
    Choy S; Kuckartz J; Dempster AG; Rizos C; Higgins M, 2017, 'GNSS satellite-based augmentation systems for Australia', GPS Solutions, vol. 21, pp. 835 - 848, http://dx.doi.org/10.1007/s10291-016-0569-2
    Journal articles | 2017
    Hu C; Benson C; Rizos C; Qiao L, 2017, 'Single-Pass Sub-Meter Space-Based GNSS-R Ice Altimetry: Results From TDS-1', IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 10, pp. 3782 - 3788, http://dx.doi.org/10.1109/JSTARS.2017.2690917
    Journal articles | 2016
    Barut RA; Trinder J; Rizos C, 2016, 'ANALYSING POST-SEISMIC DEFORMATION OF IZMIT EARTHQUAKE WITH INSAR, GNSS AND COULOMB STRESS MODELLING', The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol. XLI-B1, pp. 417 - 421, http://dx.doi.org/10.5194/isprs-archives-xli-b1-417-2016
    Journal articles | 2014
    Gallagher T; Wise E; Yam HC; Li B; Ramsey-Stewart E; Dempster AG; Rizos C, 2014, 'Indoor navigation for people who are blind or vision impaired: Where are we and where are we going?', Journal of Location Based Services, vol. 8, pp. 54 - 73, http://dx.doi.org/10.1080/17489725.2014.895062
    Journal articles | 2014
    Jiang W; Li Y; Rizos C, 2014, 'Precise indoor positioning and attitude determination using terrestrial ranging signals', Journal of Navigation, vol. 34, pp. 274 - 290, http://dx.doi.org/10.1017/S0373463314000551
    Journal articles | 2014
    Yang L; Li Y; Wu Y; Rizos C, 2014, 'An enhanced MEMS-INS/GNSS integrated system with fault detection and exclusion capability for land vehicle navigation in urban areas', GPS Solutions, vol. 18, pp. 593 - 603, http://dx.doi.org/10.1007/s10291-013-0357-1
    Journal articles | 2014
    Yang Y; Li Y; Rizos C; Dempster AG; Yue X, 2014, 'Inter-satellite ranging augmented GPS relative navigation for satellite formation flying', Journal of Navigation, vol. 67, pp. 437 - 449, http://dx.doi.org/10.1017/S0373463313000763
    Journal articles | 2014
    Yu K; Rizos C; Burrage D; Dempster AG; Zhang K; Markgraf M, 2014, 'An overview of GNSS remote sensing', Eurasip Journal on Advances in Signal Processing, vol. 2014, pp. 1 - 14, http://dx.doi.org/10.1186/1687-6180-2014-134
    Journal articles | 2013
    Chen L; Zheng Z; Li B; Zhao K; Rizos C, 2013, 'An improved algorithm to generate a Wi-Fi fingerprint database for indoor positioning', Sensors (Switzerland), vol. 13, pp. 11085 - 11096, http://dx.doi.org/10.3390/s130811085
    Journal articles | 2013
    Li B; Gallagher T; Rizos C; Dempster AG, 2013, 'Using geomagnetic field for indoor positioning', Journal of Applied Geodesy, vol. 7, pp. 299 - 308, http://dx.doi.org/10.1515/jag-2013-0016
    Journal articles | 2013
    Middleton JH; Cooke CG; Nippard GJ; Kearney ET; Mole MA; Splinter KD; Turner IL; Mumford PJ; Rizos C, 2013, 'Resolution and accuracy of an airborne scanning laser system for beach surveys', Journal of Atmospheric and Oceanic Technology, vol. 30, pp. 2452 - 2464, http://dx.doi.org/10.1175/JTECH-D-12-00174.1
    Journal articles | 2013
    Yu K; Rizos C; Dempster AG, 2013, 'GNSS-based model-free sea surface height estimation in unknown sea state scenarios', IEEE Journal of Selected Topics in Applied Earth Observations & Remote Sensing, vol. 7, pp. 1424 - 1435, http://dx.doi.org/10.1109/JSTARS.2013.2293371
    Journal articles | 2011
    Al-shaery A; Lim S; Rizos C, 2011, 'Investigation of different interpolation models using in Network-RTK for the Virtual Reference Station technique', Journal of Global Positioning Systems, Electronic, vol. 10, pp. 136 - 148
    Journal articles | 2011
    Li M; Dempster AG; Balaei AT; Rizos C; Wang F, 2011, 'Switchable beam steering/null steering algorithm for cw interference mitigation in gps C/A code receivers', IEEE Transactions on Aerospace and Electronic Systems, vol. 47, pp. 1564 - 1579, http://dx.doi.org/10.1109/TAES.2011.5937250
    Journal articles | 2011
    Liu H; Li X; Ge L; Rizos C; Wang F, 2011, 'Variable length LMS adaptive filter for carrier phase multipath mitigation', GPS Solutions, vol. 15, pp. 29 - 38, http://dx.doi.org/10.1007/s10291-010-0165-9
    Journal articles | 2011
    Musa T; Amir S; Othman R; Ses S; Kamaludin O; Abdullah K; Lim S; Rizos C, 2011, 'GPS meteorology in a low-latitude region: Remote sensing of atmospheric water vapor over the Malaysian Peninsula', Journal of Atmospheric and Solar - Terrestrial Physics, vol. 73, pp. 2410 - 2422, http://dx.doi.org/10.1016/j.jastp.2011.08.014
    Journal articles | 2011
    Ng AH-M; Ge L; Zhang K; Chang H; Li X; Rizos C; Omura M, 2011, 'Deformation mapping in three dimensions for underground mining using InSAR - Southern highland coalfield in New South Wales, Australia', International Journal of Remote Sensing, vol. 32, pp. 7227 - 7256, http://dx.doi.org/10.1080/01431161.2010.519741
    Journal articles | 2011
    Zhang K; Ge L; Hu Z; Ng AH-M; Li X, 2011, 'Phase unwrapping for very large interferometric data sets', IEEE Transactions on Geoscience and Remote Sensing, vol. 49, pp. 4048 - 4061, http://dx.doi.org/10.1109/TGRS.2011.2130530
    Journal articles | 2010
    Gallagher TJ; Li B; Dempster AG; Rizos C, 2010, 'A sector-based campus-wide indoor positioning system', 2010 International Conference on Indoor Positioning and Indoor Navigation, IPIN 2010 - Conference Proceedings, http://dx.doi.org/10.1109/IPIN.2010.5648250
    Journal articles | 2010
    Ng AH-M; Ge L; Yan Y; Li X; Chang H-C; Zhang K; Rizos C, 2010, 'Mapping accumulated mine subsidence using small stack of SAR differential interferograms in the Southern coalfield of New South Wales, Australia', Engineering Geology, vol. 115, pp. 1 - 15, http://dx.doi.org/10.1016/j.enggeo.2010.07.004
    Journal articles | 2009
    Liu H; Li X; Ge L; Rizos C; Wang F, 2009, 'Variable length LMS adaptive filter for pseudorange multipath mitigation based on SydNET stations', Journal of Applied Geodesy, vol. 3, pp. 35 - 46, http://dx.doi.org/10.1515/JAG.2009.004
    Journal articles | 2006
    Glennon EP; Dempster AG; Rizos C, 2006, 'Feasibility of Air Target Detection Using GPS as a Bistatic Radar', Positioning
    Journal articles | 2006
    Li XJ; Ge L; Ambikairajah E; Rizos C, 2006, 'Full-scale structural monitoring using an integrated GPS and accelerometer system', GPS Solutions, vol. 10, pp. 233 - 247, http://dx.doi.org/10.1007/s10291-006-0023-y
    Journal articles | 2006
    Li Y; Dempster A; Li B; Wang J; Rizos C, 2006, 'A Low-cost Attitude Heading Reference System by Combination of GPS and Magnetometers and MEMS Inertial Sensors for Mobile Applications', Journal of Global Positioning Systems, vol. 5, pp. 88 - 95, http://dx.doi.org/10.5081/jgps.5.1.88
    Journal articles | 2005
    Li XJ; Rizos C; Ge L; Tamura Y; Yoshida A, 2005, 'The complementary characteristics of GPS and accelerometer in monitoring structural deformation', ION Meeting Proceedings, pp. 911 - 920
    Journal articles | 2004
    Ge L; Li XJ; Rizos C; Omura M, 2004, 'GPS and GIS assisted radar interferometry', Photogrammetric Engineering and Remote Sensing, vol. 70, pp. 1173 - 1177, http://dx.doi.org/10.14358/PERS.70.10.1173
    Journal articles | 2004
    Rizos C; Mumford P; Parkinson KJ; Engel F; Heiser GA, 2004, 'An open GNSS receiver platform architecture', Positioning, vol. 3, pp. 63 - 69
    Journal articles | 2004
    Wang Y; Jia X; Rizos C, 2004, 'Two new algorithms for indoor Wireless Positioning System (WPS)', Proceedings of the 17th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2004, pp. 1988 - 1997
  • Conference Papers | 2014
    Yang Y; Yue X; Li Y; Rizos C; Demspter AG, 2014, 'GPS Receiver Clock Modelling for Kinematic-Based Precise Orbit Determination of Low Earth Orbiters', in Sun J (ed.), China Satellite Navigation Conference (CSNC) 2014 Proceedings: Volume III, Springer, Nanjing, China, pp. 133 - 142, presented at China Satellite Navigation Conference (CSNC) 2014, Nanjing, China, 21 May 2014 - 23 May 2014, http://dx.doi.org/10.1007/978-3-642-54740-9_12
    Conference Papers | 2013
    Yu K; Rizos C; Dempster AG, 2013, 'Forest change detection based on GNSS signal strength measurements', in 2013 IEEE IGARSS, IEEE Geoscience & Remote Sensing Society, Melbourne, Australia, pp. 1003 - 1006, presented at Int. Geoscience & Remote Sensing Symposium, Melbourne, Australia, 21 July 2013 - 26 July 2013, http://dx.doi.org/10.1109/IGARSS.2013.6721332
    Conference Papers | 2012
    Li B; Dempster AG; Rizos C; Gallagher TJ, 2012, 'How feasible is the use of magnetic field alone for indoor positioning?', in Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, USA, presented at 2012 International Conference on Indoor Positioning and Indoor Navigation, UNSW, Sydney, 13 November 2012 - 15 November 2012, http://dx.doi.org/10.1109/IPIN.2012.6418880
    Conference Papers | 2012
    Wise E; Li B; Dempster AG; Rizos C; Ramsey-Stewart E; Gallagher TJ, 2012, 'Indoor positioning system based on sensor fusion for the blind and visually impaired', in Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, USA, presented at 2012 International Conference on Indoor Positioning and Indoor Navigation, UNSW, Sydney, 13 November 2012 - 15 November 2012, http://dx.doi.org/10.1109/IPIN.2012.6418882
    Conference Papers | 2012
    Wise E; Li B; Dempster AG; Rizos C; Ramsey-Stewart E; Woo DT; Gallagher TJ, 2012, 'Indoor navigation for the blind and visually impaired: Where are we and where are we going?', in Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, USA, presented at 2012 International Conference on Indoor Positioning and Indoor Navigation, UNSW, Sydney, 13 November 2012 - 15 November 2012, http://dx.doi.org/10.1109/IPIN.2012.6418894
    Conference Papers | 2012
    Yu K; Rizos C; Dempster AG, 2012, 'Sea surface wind speed estimation based on GNSS signal measurements', in Proc Int. Geoscience & Remote Sensing Symposium, IEEE, USA, pp. 2587 - 2590, presented at IEEE Int. Geoscience & Remote Sensing Symposium, Munich, Germany, 22 July 2012 - 27 July 2012, http://dx.doi.org/10.1109/IGARSS.2012.6350950
    Conference Papers | 2011
    Lui G; Li B; Rizos C; Dempster AG; Gallagher TJ, 2011, 'Differences in RSSI readings made by different Wi-Fi chipsets: a limitation of WLAN localization', in 2011 International Conference on Localization and GNSS, ICL-GNSS 2011, IEEE Computer Society, Piscataway, NJ, United States, pp. 53 - 57, presented at 2011 International Conference on Localization and GNSS, ICL-GNSS 2011, Tampere, Finland, 29 June 2011 - 30 June 2011, http://dx.doi.org/10.1109/ICL-GNSS.2011.5955283
    Conference Papers | 2010
    Ching W; Teh RJ; Li B; Rizos C, 2010, 'Uniwide WiFi based positioning system', in Proc IEEE Int. Symp. On Technology & Society, IEEE, Wollongong, pp. 180 - 189, presented at IEEE Int. Symp. On Technology & Society, Wollongong, Australia, 07 June 2010 - 09 June 2010, http://dx.doi.org/10.1109/ISTAS.2010.5514639
    Conference Papers | 2010
    Hu Z; Ge L; Li X; Rizos C, 2010, 'Designing an illegal mining detection system based on DInSAR', in IGARSS 2010: IEEE International Geoscience and Remote Sensing Symposium, IEEE, United States, pp. 3952 - 3955, presented at 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010, Honolulu, HI, USA, 25 July 2010 - 30 July 2010, http://dx.doi.org/10.1109/IGARSS.2010.5652978
    Conference Papers | 2010
    Li B; Dempster AG; Rizos C; Gallagher TJ, 2010, 'Database updating through user feedback in fingerprint-based Wi-Fi location systems', in 2010 Ubiquitous Positioning Indoor Navigation and Location Based Service, UPINLBS 2010, Kirkkonummi, Finland, presented at 2010 Ubiquitous Positioning Indoor Navigation and Location Based Service, UPINLBS 2010, Kirkkonummi, Finland, 14 October 2010 - 15 October 2010, http://dx.doi.org/10.1109/UPINLBS.2010.5654329
    Conference Papers | 2009
    Zhang K; Ng AH-M; Chang H; Ge L; Dong Y; Rizos C, 2009, 'A new approach to improve the accuracy of baseline estimation for spaceborne radar interferometry', in International Geoscience and Remote Sensing Symposium (IGARSS), IGARSS, Cape Town, presented at IGARSS, Cape Town, 13 July 2009 - 17 July 2009, http://dx.doi.org/10.1109/IGARSS.2009.5417708
    Conference Papers | 2001
    Tsujii T; Rizos C; Wang J; Dai L; Roberts CA; Harigae M, 2001, 'A navigation/positioning service based on pseudolites installed on stratospheric airships', in Kurt Kubik (ed.), 5th International Symposium on Satellite Navigation Technology and Applications, 5th International Symposium on Satellite Navigation Technology and Applications, Canberra, presented at 5th International Symposium on Satellite Navigation Technology and Applications, Canberra, 24 July 2001 - 27 July 2001
    Conference Papers | 1996
    Han S; Rizos C, 1996, 'GPS network design and error mitigation for real-time continuous array monitoring systems', in Proceedings of ION GPS, pp. 1827 - 1836
    Conference Papers | 1995
    Rizos C; Han SW, 1995, 'A new method for constructing multi-satellite ambiguity combinations for improved ambiguity resolution', in PROCEEDINGS OF ION GPS-95 - THE 8TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION, PTS 1 AND 2, INST NAVIGATION, PALM SPRINGS, CA, pp. 1145 - 1153, presented at 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95), PALM SPRINGS, CA, 12 September 1995 - 15 September 1995, https://www.ion.org/publications/abstract.cfm?articleID=2349

Professor Rizos’s expertise and research interests include:

  • Geospatial technology, modern geodesy technologies and applications, digital mapping
  • GNSS and geospatial information management policy
  • Technology and application of satellite-, wireless- and inertia-based sensors for high accuracy positioning
  • GNSS for all classes of uses from navigation to geodesy
  • GNSS positioning infrastructure, geodetic and height datums

President-elect International Union of Geodesy & Geophysics (IUGG) (2019-2023)

Member of the National Committee for Earth Sciences of the Australian Academy of Science (2015-2023)

Member of the National Committee for Space & Radio Sciences of the Australian Academy of Science (2016-2020)

My Research Supervision

Ms Olga Pimenov - "Design of a New Vertical Datum for Costa Rica"

Ms Frances Wiig - "SAR Archeology"

My Teaching

N/A