Gethin Wyn Roberts

2023

Extracting ionospheric phase scintillation indicator from GNSS observations with 30-s sampling interval in the high-latitude region

Zhao, D., Zhang, X., Li, W., Wang, Q., Hancock, C. M., Li, C., Roberts, G. W. & Zhang, K., 2 Mar 2023, In: GPS Solutions. 27, 16 p., 79.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

2022

Ionospheric Phase Scintillation Index Estimation Based on 1 Hz Geodetic GNSS Receiver Measurements by Using Continuous Wavelet Transform

Zhao, D., Li, W., Li, C., Tang, X., Wang, Q., Hancock, C. M., Roberts, G. W. & Zhang, K., 13 Apr 2022, In: Space Weather. 20, 4, 18 p., e2021SW003015.

Research output: Contribution to journal › Article › peer-review

Open Access

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10 Citations (Scopus)

57 Downloads (Pure)

PPP-derived tropospheric ZWD augmentation from local CORS network tested on bridge monitoring points

Tang, X., Liu, Z., Roberts, G. W. & Hancock, C. M., 4 Mar 2022, In: Advances in Space Research. 69, 10, p. 3633-3643 11 p.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Statistical study on the characterization of phase and amplitude scintillation events in the high-latitude region during 2014–2020 based on ISMR

Zhao, D., Li, W., Wang, Q., Liu, X., Li, C., Hancock, C. M., Roberts, G. W. & Zhang, K., 23 Feb 2022, In: Advances in Space Research. 69, 9, p. 3435-3459

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Validating Ionospheric Scintillation Indices Extracted from 30s-Sampling-Interval GNSS Geodetic Receivers with Long-Term Ground and In-Situ Observations in High-Latitude Regions

Zhao, D., Wang, Q., Li, W., Shi, S., Quan, Y., Hancock, C. M., Roberts, G. W., Zhang, K., Chen, Y., Liu, X., Hao, Z., Cui, S., Zhang, X. & Wang, X., 29 Aug 2022, In: Remote Sensing. 14, 17, p. 4255

Research output: Contribution to journal › Article › peer-review

Open Access

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2 Citations (Scopus)

70 Downloads (Pure)

2021

Analysis on the ionospheric scintillation monitoring performance of ROTI extracted from GNSS observations in high-latitude regions

Zhao, D., Li, W., Li, C., Hancock, C. M., Roberts, G. W. & Wang, Q., 1 Oct 2021, In: Advances in Space Research. 69, 1, p. 142-158

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Displacement and frequency response measurements of a ship using GPS and fibre optic-based sensors

Roberts, G. W., Hancock, C. M., Lienhart, W., Klug, F., Zuzek, N. & Ligt, H. D., 17 May 2021, In: Applied Geomatics. 13, Suppl. 1, p. 551-561 11 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Monitoring the response of Severn Suspension Bridge in the United Kingdom using multi-GNSS measurements

Msaewe, H. A., Psimoulis, P. A., Hancock, C. M., Roberts, G. W. & Bonenberg, L. K., 10 Jul 2021, In: Structural Control and Health Monitoring. 28, 11, 29 p.

Research output: Contribution to journal › Article › peer-review

Open Access

23 Citations (Scopus)

Prior Position- and ZWD-Constrained PPP for Instantaneous Convergence in Real-Time Kinematic Application

Tang, X., Jin, S. & Roberts, G. W., 13 Jul 2021, In: Remote Sensing. 13, 14, 2756.

Research output: Contribution to journal › Article › peer-review

Open Access

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2 Citations (Scopus)

19 Downloads (Pure)

2020

Costas Armenakis and Petros Patias: Unmanned vehicle systems for geomatics, towards robotic mapping

Roberts, G. W., 9 Mar 2020, In: Applied Geomatics. 12, 1, p. 1-2 2 p.

Research output: Contribution to journal › Article

1 Citation (Scopus)

Damage detection under temperature conditions using PCA: an application to the Z24 Bridge

Wah, W. S. L., Chen, Y.-T., Elamin, A. & Roberts, G. W., 14 Jul 2020, In: Proceedings of the Institution of Civil Engineers - Structures and Buildings.

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Time Series Analysis of Rapid GNSS Measurements for Quasi-static and Dynamic Bridge Monitoring

Roberts, G. W., Meng, X., Psimoulis, P. A. & Brown, C. J., 2020, Geodetic Time Series Analysis in Earth Sciences. Montillet, J. P. & Bos, M. (eds.). Cham.: Springer Geophysics, p. 345–417 73 p.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

2019

1 Hz GPS satellites clock correction estimations to support high-rate dynamic PPP GPS applied on the Severn suspension bridge for deflection detection

Tang, X., Li, X., Roberts, G. W., Hancock, C. M., de Ligt, H. & Guo, F., 2019, In: GPS Solutions. 23, 2, 12 p., 28.

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

A triple-frequency cycle slip detection and correction method based on modified HMW combinations applied on GPS and BDS

Zhao, D., Roberts, G. W., Hancock, C. M., Lau, L. & Bai, R., Jan 2019, In: GPS Solutions. 23, 22, 14 p., 22.

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Cycle Slip Detection during High Ionospheric Activities Based on Combined Triple-Frequency GNSS Signals

Zhao, D., Hancock, C., Roberts, G. W. & Jin, S., Jan 2019, In: Remote Sensing. 11, 3, 20 p., 250.

Research output: Contribution to journal › Article › peer-review

Open Access

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15 Citations (Scopus)

14 Downloads (Pure)

Deflection characterisation of rotary systems using ground-based radar

Ochieng, F. X., Jiang, H., Hancock, C. M., Roberts, G. W., Kernec, J. L., Tang, X. & Ligt, H. D., 1 Oct 2019, In: The Journal of Engineering. 2019, 20, p. 7215-7219 5 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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28 Downloads (Pure)

Deflection Monitoring and frequency response of a Ship using GPS and Fibre Optic based sensors

Roberts, G. W., Hancock, C. M., Klug, F., Lienhart, W., Zuzek, N. & Ligt, H. D., 2019, 4th Joint International Symposium on Deformation Monitoring (JISDM), 15-17 May 2019. Athens, Greece, 5 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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33 Downloads (Pure)

Erratum to: Principal Stress Rotation under Bidirectional Simple Shear Loadings (KSCE Journal of Civil Engineering, (2018), 22, 5, (1651-1660), 10.1007/s12205-017-0822-4)

Li, Y., Yang, Y., Yu, H.-S. & Roberts, G., 2019, In: KSCE Journal of Civil Engineering. 23, 1 p., 2813.

Research output: Contribution to journal › Article › peer-review

Gear fault diagnosis using the general linear chirplet transform with vibration and acoustic measurements

Hartono, D., Halim, D. & Roberts, G. W., 2019, In: Journal of Low Frequency Noise, Vibration and Active Control. 38, 1, p. 36-52

Research output: Contribution to journal › Article › peer-review

Open Access

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20 Citations (Scopus)

55 Downloads (Pure)

Low-cost IMU and odometer tightly coupled integration with Robust Kalman filter for underground 3-D pipeline mapping

Zhang, P., Hancock, C. M., Lau, L., Roberts, G. W. & Ligt, H. D., Apr 2019, In: Measurement: Journal of the International Measurement Confederation. 137, p. 454-463 10 p.

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Measurement and correlation of displacements on the Severn Suspension Bridge using GPS

Roberts, G. W., Tang, X. & Brown, C. J., 17 Jun 2019, In: Applied Geomatics. 11, 2, p. 161-176 16 p.

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Noise comparison of triple frequency GNSS carrier phase, doppler and pseudorange observables

Roberts, G. W., 2019, In: Measurement: Journal of the International Measurement Confederation. 144, p. 328-344 17 p.

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

On the Improvement of Precise Point Positioning augmented with tropospheric ZWD using CORS networks applied to bridge monitoring

Tang, X., Hancock, C. M., Roberts, G. W., Jin, S., Li, H. & Ligt, H. D., 2019, 4th Joint International Symposium on Deformation Monitoring (JISDM), 15-17 May 2019, Athens, Greece. 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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15 Downloads (Pure)

Removal of masking effect for damage detection of structures

Soo Lon Wah, W., Owen, J. S., Chen, Y.-T., Elamin, A. & Roberts, G. W., 2019, In: Engineering Structures. 183, p. 646-661 16 p.

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Temporal characteristics of triple-frequency GNSS scintillation during a visible aurora borealis event over the Faroe Islands amid a period of very low solar activity

Roberts, G. W., Fossá, S. & Jepsen, C., Jul 2019, In: GPS Solutions. 23, 9 p., 89.

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

The future of precision with 5 GNSS constellations

Roberts, G. W., Hancock, C. M. & Tang, X., 11 Jan 2019, GPS World, 30, 1, p. 28-35 4 p.

Research output: Contribution to specialist publication › Article

2018

Accuracy analysis of GPS/BDS relative positioning using zero-baseline measurements

Roberts, G. W., Tang, X. & He, X., Apr 2018, In: The Journal of Global Positioning Systems. 16, 7, 8 p., 7.

Research output: Contribution to journal › Article › peer-review

Open Access

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16 Downloads (Pure)

A review of ground-based radar as a noncontact sensor for structural health monitoring of in-field wind turbines blades

Ochieng, F. X., Hancock, C. M., Roberts, G. W. & Kernec, J. L., Jul 2018, In: Wind Energy. 21, p. 1435-1449 15 p.

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Benefit of Triple-Frequency on Cycle-Slip Detection

Zhao, D., Hancock, C. M., Roberts, G. W. & Lau, L., 2018, FIG Congress 2018: Embracing our smart world where the continents connect: enhancing the geospatial maturity of societies Istanbul, Turkey, May 6–11, 2018. International Federation of Surveyors, FIG, 11 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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4 Downloads (Pure)

Comparison of Triple Frequency GNSS Carrier Phase and Pseudorange noise using various satellite constellations.

Roberts, G. W., Hancock, C. M. & Tang, X., 2018, FIG Congress 2018: Embracing our smart world where the continents connect: enhancing the geospatial maturity of societies Istanbul, Turkey, May 6–11, 2018. 12 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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6 Downloads (Pure)

Convolutional Neural Network Based Multipath Detection Method for Static and Kinematic GPS High Precision Positioning

Quan, Y., Lau, L., Roberts, G. W., Meng, X. & Zhang, C., 2018, In: Remote Sensing. 10, 12, 18 p., 2052.

Research output: Contribution to journal › Article › peer-review

Open Access

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74 Citations (Scopus)

15 Downloads (Pure)

Cover Image

Ochieng, F. X., Hancock, C. M., Roberts, G. W. & Kernec, J. L., Oct 2018, 1 p. John Wiley and Sons Ltd.

Research output: Other contribution › peer-review

Effect of Sample Reconstitution Methods on the Behaviors of Granular Materials under Shearing

Li, Y., Yang, Y., Yu, H.-S. & Roberts, G., Mar 2018, In: Journal of Testing and Evaluation. 46, 6, 8 p.

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Gear fault diagnosis using an improved Reassigned Smoothed Pseudo Wigner-Ville Distribution

Hartono, D., Halim, D. & Roberts, G. W., 2018, In: Cogent Engineering. 5, 1, 16 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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16 Citations (Scopus)

12 Downloads (Pure)

GPS/BDS relative positioning assessment by zero baseline observation

Tang, X., Roberts, G. W., Hancock, C. M. & Yu, J., Feb 2018, In: Measurement: Journal of the International Measurement Confederation. 116, p. 464-472 9 p.

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Novel non-contact deformation health monitoring of towers and rotating composite based wind turbine blades using interferometric ground-based radar

Ochieng, F. X., Hancock, C. M., Roberts, G. W., Kernec, J. L. & Tang, X., 2018, FIG Congress 2018 : Embracing our smart world where the continents connect: enhancing the geospatial maturity of societies Istanbul, Turkey, May 6–11, 2018. 13 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

File

3 Downloads (Pure)

Separating damage from environmental effects affecting civil structures for near real-time damage detection

Wah, W. S. L., Chen, Y.-T., Roberts, G. W. & Elamin, A., 4 Jul 2018, In: Structural Health Monitoring. 17, 4, p. 850-868 19 p.

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

2017

A review of the use of terrestrial laser scanning application for change detection and deformation monitoring of structures

Mukupa, W., Roberts, G. W., Hancock, C. M. & Al-Manasir, K., 2017, In: Survey Review. 49, p. 99-116 18 p.

Research output: Contribution to journal › Article › peer-review

183 Citations (Scopus)

Assessment of the Effects of Combining Multi-GNSS Constellations on the Solution Accuracy and Availability

Msaewe, H. A., Hancock, C. M., Psimoulis, P. A., Roberts, G. W. & Bonenberg, L. K., 2017, FIG Working Week 2017: Surveying the world of tomorrow - From digitalisation to augmented reality Helsinki, Finland, May 29–June 2, 2017. 11 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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4 Downloads (Pure)

Correction of Terrestrial LiDAR Data Using a Hybrid Model

Mukupa, W., Roberts, G. W., Hancock, C. M. & Al-Manasir, K., 2017, FIG Working Week 2017: Surveying the world of tomorrow : from digitisation to augmented reality. Helsinki, Finland, May 29–June 2, 2017. 26 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Open Access

File

6 Downloads (Pure)

Correlated GNSS and temperature measurements at 10-minute intervals on the Severn Suspension Bridge

Roberts, G. W., Brown, C. J. & Tang, X., Jun 2017, In: Applied Geomatics. 9, 2, p. 115-124

Research output: Contribution to journal › Article › peer-review

Open Access

File

6 Citations (Scopus)

7 Downloads (Pure)

Correlations between the stress paths of a monotonic test and a cyclic test under the same initial conditions

Li, Y., Yang, Y., Yu, H.-S. & Roberts, G., Oct 2017, In: Soil Dynamics and Earthquake Engineering. 101, p. 153-156 4 p.

Research output: Contribution to journal › Article › peer-review

Open Access

File

31 Citations (Scopus)

7 Downloads (Pure)

Cycle slip Detection for Triple-Frequency GPS Observations under Ionospheric Scintillation

Zhao, D., Roberts, G. W., Hancock, C. M. & Bai, R., 2017, ION GNSS+ 2017: Proceedings of the 30th International Technical Meeting of the Satellite Division of The Institute of Navigation. Portland, Oregon: Institute of Navigation, p. 4046-4054

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Damage Detection of Structures Subject to Nonlinear Effects of Changing Environmental Conditions

Wah, W. S. L., Chen, Y.-T., Roberts, G. W. & Elamin, A., 2017, In: Procedia Engineering. 188, p. 248-255 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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17 Citations (Scopus)

4 Downloads (Pure)

Discussion of "Radial strain behaviors and stress state interpretation of soil under direct simple shear" by X. Kang, Y. Cheng, and L. Ge. the regular article was published in journal of testing and evaluation, vol. 43, no. 6, 2015, pp. 1594-1601, doi:10.1520/JTE20140202. ISSN 0090-3973

Li, Y., Yang, Y. M., Roberts, G. W. & Yu, H. S., 2017, In: Journal of Testing and Evaluation. 45, 2

Research output: Contribution to journal › Article › peer-review

Investigating multi-GNSS performance in the UK and China based on a zero-baseline measurement approach

Msaewe, H. A., Hancock, C. M., Psimoulis, P. A., Roberts, G. W., Bonenberg, L. & Ligt, H. D., May 2017, In: Measurement: Journal of the International Measurement Confederation. 102, p. 186-199

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Monotonic direct simple shear tests on sand under multidirectional loading

Li, Y., Yang, Y., Yu, H.-S. & Roberts, G., 2017, In: International Journal of Geomechanics. 17, 1, 10 p.

Research output: Contribution to journal › Article › peer-review

Open Access

File

47 Citations (Scopus)

16 Downloads (Pure)

Real-time kinematic PPP GPS for structure monitoring applied on the Severn Suspension Bridge, UK

Tang, X., Roberts, G. W., Li, X. & Hancock, C. M., May 2017, In: Advances in Space Research. 60, p. 925-937 13 p.

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Satellite mapping in cities and below cities: how good is it now?

Hancock, C., Zhang, P., Lau, L., Roberts, G. & Ligt, H. D., Feb 2017, In: Proceedings of the Institution of Civil Engineers - Civil Engineering. 170, 1, p. 33-38 1600022.

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

Roberts, G. W. & Tang, X., Jun 2017, In: Advances in Space Research. 59, 11, p. 2794-2808

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Gethin Wyn Roberts

Research output

Search results