University of Nottingham Ningbo China
Faculty of
Science and Engineering
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Dr Lawrence Lau

Associate Professor in Geodesy and Surveying , Department of Civil Engineering

Qualifications

PhD (University College London)
FRICS (Chartered Surveyor)
FClnstCES
FRIN
FRAS

Contact

  

Biography

Expertise summary

Lawrence joined the University of Nottingham, Ningbo, China (UNNC) in October 2011. Before joining UNNC, he worked as an Associate Professor in the Institute of Geomatics in Barcelona from March 2010 to September 2011. In 2004 – 2010, he was a Postdoctoral Research Fellow at University College London (UCL), UK. In his about 6 years at UCL he worked on several research projects, including two UK EPSRC-funded research project called SPACEiNsight, two EU FP6 projects called BEAR and ANASTASIA, and two consultancy projects. SPACE was undertaken by a consortium of eleven UK university and industrial  group1and iNsight (an on-going project) is undertaken by a consortium of thirteen UK university and industrial group2. Before joining UCL, he worked as a technical analyst in NSL (2002 - 2004) in design and development of the new European GNSS (Galileo); he worked on two European Commission (EC) and European Space Agency (ESA) funded Galileo System Test Bed (GSTB-V1 and GSTB-C0) projects. In 1999 – 2002, he worked in the Hong Kong Polytechnic University as a Research Associate for several vehicle navigation projects. 

Lawrence helped with the supervision of BSc, MSc and PhD projects, and giving lectures to MSc courses (Positioning module), in Department of CEGE at UCL.  Moreover, he was a (part-time) lecturer in Engineering Surveying at the Hong Kong Institute of Vocational Education in 1999 – 2002. In 1995 – 1997, he worked as a Junior Land Surveyor in the Hong Kong Mass Transit Railway Corporation for the construction of the new airport railway. 

Lawrence has practical and industrial experience in Engineering Surveying and Space Geodesy. Moreover, he has significant research and lecturing experience in Engineering Surveying and Space Geodesy.

1 the CAA Institute of Satellite Navigation at the University of Leeds, the Department of Civil and Environmental Engineering at Imperial College London, the Department of Geomatic Engineering (CEGE) at UCL, and the Institute of Engineering Surveying and Space Geodesy (IESSG) at University of Nottingham, the UK Civil Aviation Authority, EADS Astrium, Leica Geosystems, Nottingham Scientific Limited (NSL), Ordnance Survey, QinetiQ and Thales Research and Technology

2 the Department of Electronic, Communication and Software Engineering at the University of Westminster, the Department of Civil and Environmental Engineering at Imperial College London, the Department of Civil, Environmental and Geomatic Engineering (CEGE) at UCL, and the IESSG at University of Nottingham, Air Semiconductors, Civil Aviation Authority, EADS Astrium, Leica Geosystems, NSL, Ordnance Survey, QinetiQ, ST Microsystems, and Thales Research and Technology

Lawrence’s current research interests are summarised as follows:

  • Integration of GNSS systems (e.g., GPS + Galileo + Compass): Multiple-frequency data processing algorithms
  • Sensor integration for positioning and navigation (e.g., integration of GNSS and inertial measurements sensors)
  • Ambiguity resolution – reliability and efficiency improvements
  • Precise Point Positioning (PPP) techniques
  • High-precision relative positioning for static and kinematic applications
  • Multipath modelling and mitigation techniques
  • Attitude determination
  • GNSS for geodetic and engineering surveying applications

Teaching

Undergraduate

  • Professional Engineering Studies (Module Convenor; 2011-12)
  • Engineering Communication (Module Convenor; 2011-12)
  • Engineering Surveying 1
  • Engineering Surveying 2(Module Convenor)

Postgraduate

  • MSc in Engineering Surveying and Geodesy (Course Director):
  • Analytical Methods (Module Convenor)
  • Fundamentals of Satellite Positioning
  • Geodetic Reference Systems (Module Convenor,2012-2013)
  • Advanced Satellite Positioning (Module Convenor)
  • Physical Geodesy(Module Convenor, 2012-13)
  • Engineering Surveying
  • Research Project (Module Convenor)

PhD supervision

  • Precise Orbit Determination for Beidou/Compass
  • lntegration of GNSS with geotechnical sensors in a built up area for the detection of buried utilities
  • A New Machine Learning based Method for Multi-GNSS Data Quality Assurance and Multipath Detection (successfully completed, 2017)

Selected recent publications

Journal articles

Sole author (17%), Lead/sole author (67%); second author (8%), below second author (25%)

Lau, L. (2017) Wavelet Packets Based Denoising Method for Measurement Domain Repeat-time Multipath Filtering in GPS Static High-Precision Positioning.  GPS Solutions, 21(2), pp.461-474. DOI:10.1007/s10291-016-0533-1. Open Access. [SCI Impact Factor: 2.991 (2015)]

Lau, L. and He, J. (2017) Investigation into the Effect of Atmospheric Particulate Matter (PM2.5 and PM10) Concentrations on GPS Signals. Sensors, 17, 508. Open Access. [SCI Impact Factor: 2.033 (2015)]

Zhao, D., Roberts, G. W., Lau, L., Hancock, C., Bai, R. (2016) A Theoretical and Empirical Integrated Method to Select the Optimal Combined Signals for Geometry-Free and Geometry-Based Three Carrier Ambiguity Resolution.  Sensors, 16(11), 1929. [SCI Impact Factor: 2.033 (2015)]

Hancock, C. M., Zhang, P., Lau, L., Roberts, G. W. (2016) Satellite Mapping in Cities, How good is it now? Proceedings Institution of Civil Engineers - Civil Engineering, October 2016. [SCI Impact Factor: 0.348 (2016)]

Quan, Y., Lau, L., Roberts, G. W., Meng, X. (2016) Measurement Signal Quality Assessment on All Available and New Signals of Multi-GNSS (GPS, GLONASS, Galileo, BDS, and QZSS) with Real Data. Journal of Navigation, 69(2), pp 313-334. DOI: 10.1017/S0373463315000624  [SCI Impact Factor: 1.267 (2015/16)]

Lawrence Lau, Hiroaki Tateshita and Kazutoshi Sato. (2015) Impact of Multi-GNSS on Positioning Accuracy and Multipath Errors in High-Precision Single-Epoch Solutions - A Case Study in Ningbo China. The Journal of Navigation, volume 68, issue 05, pp. 999-1017. [SCI Impact Factor: 1.267 (2015/16)]

Lau, L., Cross, P., Steen, M. (2012) Flight Tests of Error-Bounded Heading and Pitch Determination with Two GPS Receivers. IEEE Transactions on Aerospace and Electronic Systems, January, 48(1), pp. 388-404.[SCI Impact Factor: 1.767 (2012)]

Lau, L. (2012) Comparison of Measurement and Position Domain Multipath Filtering Techniques with the Repeatable GPS Orbits for Static Antennas. Survey Review, January, 44(324), pp. 9-16.[SCI Impact Factor: 0.393 (2012)]

Lau, L. and Cross, P. (2007) Phase Multipath Mitigation Techniques for High Precision Positioning in All Conditions and Environments. Journal of Navigation, 60(3), pp. 457-482.[SCI Impact Factor: 0.479 (2006), 0.486 (2007), 0.826 (2012)]

Lau, L. and Cross, P. (2007) Development and Testing of a New Ray-Tracing Approach to GNSS Carrier-Phase Multipath Modelling. Journal of Geodesy, 81(11), pp. 713-732.[SCI Impact Factor: 1.21 (2006), 1.636 (2007), 2.898 (2012)]

Mok, E., Retscher, G., Lau, L. (2002) Development of an Event-Reporting Intelligent Vehicle Navigation System for Areas with Urban Canyons, Survey Review, 36(284), pp. 398-409.[SCI Impact Factor: 0.102 (2002), 0.196 (2003), 0.393 (2012)]

Lau, L. and Mok, E. (1999) Improvement of GPS Relative Positioning Accuracy By Using SNR. Journal of Surveying Engineering, 125(4), pp. 185-202.[SCI Impact Factor: 0.357 (1999), 0.982 (2012)]

Peer-Reviewed Conference Papers/Conference Papers


Tang, Y. T., Griffiths, J., Chan, F., Lau, L. (2015), The Impact of Land Reclamation and Water Way Management in Ancient Ningbo. On The Third Conference of East Asian Environmental History 2015, Takamatsu, Kagawa, Japan.  22nd – 25th of October, 2015.

Tang, Y.T., Griffiths, J., Chan, F., Lau, L. (2015) To Combine Heritage Preservation and Modern Water Management: the Observation of the Utilisation of an Ancient Chinese Waterway in Ningbo, China. On CFWA Ningbo Event: Urban Water and Flood Risk Management Symposium, Ningbo.  15th – 18th of June, 2015.

Tang, Y.T., Griffiths, J., Chan, F., Lau, L. (2015) From Historical Urban to Modern Urban: the Observation of the Utilisation of an Ancient Chinese Waterway in Ningbo, China. On the Road to Silk and Gold, 1st Sino-Latin American Symposium, Ningbo. 13th – 14th of March 2015.

Lau, L. and G. Roberts (2012) GNSS Modernisation and Its Effect on Surveying, Proceedings of FIG Working Week 2012, Rome, Italy, 6-10 May.

Wasle, E., Lau, L., Mongrédien, C., Kalmann, A., Ritter, S. (2011) Development of an Assisted Galileo Receiver Integrated with Inertial Sensors for Automotive Applications.  Proceedings of the International Geomatics Week, 15 -17 March 2011, Barcelona, Spain.

Groves, P.D., Hennessy, P., Cross, P.A., Lau, L., Adane, Y., Kale, I. (2010) Novel Multipath Mitigation Methods using a Dual Polarization Antenna. Proceedings of ION GNSS 2010, September 21-24 2010, Portland, Oregon.

Lau, L. (2009) Practical Multivariate Statistical Multipath Detection Methods Using Multiple-Frequency GNSS Phase Data. Invited paper, Coordinates, Vol. V, Issue 12.

Cross, P., Ziebart, M., Lau, L., Ochieng, W., Feng, S., Moore, T., Hill, C., Kale, I., Kazazoglu, R. (2009) Extending the Applications and Improving the Efficiency of Positioning Through the Exploitation of New GNSS Signals. Proceedings of ENC-GNSS 2009, May 3-6, 2009, Naples, Italy.

Lau, L. and Cross, P. (2008) Tests with Practical Multivariate Statistical Multipath Detection Methods Using Multiple-Frequency GNSS Phase Data. Proceedings of International Symposium on GPS/GNSS 2008, 11-14 November, Tokyo, Japan, pp. 990-1004.

Moore, T., Hill, C., Hide, C., Ochieng, W., Feng, S., Aguado, E., Ioannides, R., Cross, P., Lau, L. (2007) End-to-End Testing of an Integrated Centimetric Positioning Test-Bed. Proceedings of the ION GNSS 2007, 25-28 Sept. 2007, Fort Worth Convention Center, Fort Worth, Texas.

Lau, L. and Cross, P. (2006) A New Signal-to-Noise-Ratio Based Stochastic Model for GNSS High-Precision Carrier Phase Data Processing Algorithms in the Presence of Multipath Errors. Proceedings of ION GNSS 2006, September 26-29, Fort Worth Convention Center, Fort Worth, Texas.

Lau, L. and Cross, P. (2006) Prospects for Phase Multipath Mitigation Using Antenna Arrays for Very High Precision Real-Time Kinematic Applications in the Presence of New GNSS Signals. Proceedings of The European Navigation Conference 2006, 8-10 May 2006, Manchester, UK.

Moore , T., Hill, C.J., Hide, C.D., Walsh, D.M., Cooper, J., Ioannides, R., Ochieng, W.Y., Feng, S., Cross, P.A., Lau, L. (2005) Seamless Positioning in All Conditions and Environments: SPACE. Proceedings of National Navigation Conference NAV05, The Royal Institute of Navigation, 1-3 November 2005, London.

Lau, L. and Cross, P. (2005) Use of Signal-To-Noise Ratio for Real-Time GNSS Phase Multipath Mitigation. Proceedings of National Navigation Conference NAV05, The Royal Institute of Navigation, 1-3 November 2005, London.

Moore, T., Hill, C., Hide, C., Cross, P., Lau, L., Walsh, D., Cooper, J., Ioannides, R., Ochieng, W., Feng, S. (2005) Development of a Test Bed Facility for High Accuracy Positioning in Difficult Environments. Proceedings of ION GNSS 2005, 13-16 September 2005, Long Beach, California.

Moore, T., Hill, C., Hide, C., Walsh, D., Cooper, J., Ioannides, R., Ochieng, W., Feng, S., Cross, P., Lau, L. (2005) Seamless Positioning in All Conditions and Environments: SPACE. Proceedings of The European Navigation Conference GNSS 2005, 19-22 July 2005, Munich, Germany.

Lau, L. (2004) Investigations into Multipath Effects on GNSS Multiple-Frequency Single Epoch High Precision Positioning. Proceedings of ION GNSS 2004, Long Beach, California, 21-24 September 2004. (ION Sponsored Student Award)

Lau, L. and Cross, P. (2003) Impact of GPS Modernization on Precise Carrier Phase-Based Positioning in the Presence of Multipath. Proceedings of ION GPS/GNSS 2003, Portland, Oregon, 9-12 September 2003.

Lau, L., Pattinson, M., Sheridan, K. (2003) Adapted Precise Point Positioning within Galileo Development and Validation Activities. Proceedings of GNSS 2003 The European Navigation Conference, 22-25 April 2003, Graz, Austria.

Mok, E, and Lau, L. (2001) GPS vehicle location tracking with the Minimum Range ERror Algorithm (MRERA). Proceedings of ION GPS-2001, Salt Lake City, Utah, 11-14 September 2001.

Mok, E., Rizos, C., Shea, G., Lau, L. (2001) A Low-Cost Automated GPS-Based Deformation Monitoring System, Proceedings of IAG Workshop on Monitoring of Construction and Local Geodynamic Processes, Wuhan, China, 22-24 May 2001.

Mok, E., Rizos, C., Lau, L. (2001) Accuracy Assessment of a Low-Cost GPS Receiver Suitable for Deformation Monitoring Systems. Proceedings of IAG Workshop on Monitoring of Construction and Local Geodynamic Processes, Wuhan, China, 22-24 May 2001.

Mok, E. and Lau, L. (2000) A Prototype of Event Reporting Intelligent Vehicle Navigation. Proceedings of the 5th Conference of the Hong Kong Society for Transportation Studies (HKSTS), 2nd December 2000, Sheraton Hotel, Kowloon, Hong Kong.

Chao, C. H. and Lau, L. (1999) Transformation between PZ-90 and HK-80. Proceedings of The First Hong Kong Symposium on Satellite Positioning System Application, The Hong Kong Polytechnic University, 11th, December, 1999.

Lau, L. and Mok, E. (1999) Precise GPS Processing Algorithm for Short Observation Time-span in Urban Area. Proceedings of the 55th Annual Meeting: Navigational Technology for the 21st Century, jointly sponsored by the Institute of Navigation and Draper Laboratory, June 28-30, 1999, Royal Sonesta Hotel, Cambridge, MA, USA., pp. 533-540.

Lau, L. and Mok, E. (1999) Improvement of GPS Relative Carrier Phase Positioning Accuracy by SNR Weighted Ambiguity Function Technique. Proceedings of the 55th Annual Meeting: Navigational Technology for the 21st Century, jointly sponsored by the Institute of Navigation and Draper Laboratory, June 28-30, 1999, Royal Sonesta Hotel, Cambridge, MA, USA., pp. 323-332.

Research awards, grants and consultancies

EQUATOR - Exploiting the use of QZSS and Multi-GNSS for navigational and high precision positioning applications and their performance assessment, JAXA’s Multi-GNSS Joint Experiment 2011

ION Sponsored Student Award, 2004 (US$2000).

EPSRC Large Grant for a project called “Extending the Applications and Improving the Efficiency of Positioning Through the Exploitation of New GNSS Signals” or iNsight in short – Lawrence was a Researcher Co-investigator of the project and he contributed in writing the proposal that was led by UCL in collaboration with colleagues from Imperial College and the universities of Nottingham and Westminster, and in collaboration with nine commercial companies and government agencies, 2008 (£706k).

2011 - Co-Investigator (co-author of the proposal), Galileo for Gravity (GAL), funded by the European Commission (grant 287193) as part of the 7th Framework Programme for Research and Development (FP7). GAL belongs to the FP7-GALILEO-2011-GSA-1-a call and to the Work Programme Topic GALILEO.2011.1.3.1 "Use of Galileo and EGNOS for Scientific Applications and Innovative Applications in New Domains¡±, FP7-GALILEO-2011-GSA-1 (Ref: 287193), (€253.6k for IG; total: €864k).

On-going research project

2016 - Principal Investigator, “A New Error bounded Algorithm for Seamless Indoor Positioning”, Zhejiang Natural Science Foundation (ZJNSF) General Programme, collaboration with the Ningbo Institute of Surveying and Mapping, Jan 2017-Dec 2019 (Project code: LY17D040001, 3 years, RMB 80,000 - UNNC).

EQUATOR - Exploiting the use of QZSS and Multi-GNSS for navigational and high precision positioning applications and their performance assessment, JAXA’s Multi-GNSS Joint Experiment 2011

Service, including administration

External scientific professional service

  • Member of the International Association of Geodesy (IAG) Working Group 4.5.4: Data Processing of Multiple GNSS Signals, 2010-present.
  • FIG Commission 6 Vice Chairman,2012-2013
  • RICS Student Chapter
  • Executive council member of the Ningbo Institution of Surveying and Geospatial Science
  • An acedemic leader of the Ningbo Surveying Export Pool

External Examining

  • PhD External Examiner, School of Surveying and Spatial Information Systems, University of New South Wales, March 2010.
  • PhD External Examiner, Department of Infrastructure Engineering, University of Melbourne, March 2013.

University committee responsibilities

  • Examinations Officer (BEng in Civil Engineering,2011-2012 and MSc in Engineering Surveying and Geodesy,2012-2013)
  • PGT Coordinator
  • PG LCF

Invited lectures/seminars

“GPS: Biases, Errors and Limitations”, Continuing Professional Development, invited by The Hong Kong Institution of Engineering Surveyors – 24/09/1998.

“Control of Multipath” in Scottish Geomatics 2007, University of Glasgow, invited by the Institute of Civil Engineering Surveyors and the Department of Geographical and Earth Sciences at the University of Glasgow – 23/02/2007.

Lau, L, G. Roberts, C. Hancock (2012) Technical Impact of Multiple GNSS on Applications, Reference Frame in Practice, IAG/FIG Commission 5/ICG Technical Seminar, Rome, Italy, 4-5 May.

Reviewer for journals

ASCE Journal of Surveying Engineering, IEEE Transactions on Aerospace and Electronic Systems, IET (IEE) Radar, Sonar & Navigation, International Journal of Navigation and Observation, Journal of Civil Engineering - Korean Society of Civil Engineers (KSCE), Journal of Geodesy, Sensors, Journal of Navigation, Remote Sensing, International Journal of Image and Data Fusion, Applied Geomatics, Journal of Applied Geodesy

Member of the editorial board for Journal of Applied Engineering Sciences

Professional Affiliations

  • Fellow of The Royal Institute of Navigation
  • Fellow of The Royal Astronomical Society
  • Fellow of The Chartered Institution of Civil Engineering Surveyors
  • Fellow of The Royal Institution of Chartered Surveyors
  • Member of International Association of Geodesy