GAARDIAN - GNSS Availability, Accuracy, Reliability and Integrity Assessment for Timing and Navigation

Project: Research council

Project Details

Description

Critical infrastructure applications (e.g. transport, telecoms, utilities, security and maritime) require real-time and continuous localised knowledge of the reliability and quality (integrity) of PNT data in the vicinity of use - this is not available today. GAARDIAN proposes to develop novel methods for real-time, autonomous, continuous and accurate gathering and filtering of 3 independent enormous sets of Positioning, Navigation and Timing (PNT) data nationally and in complex/difficult environments, to enable robust, real-time and continuous quality (integrity) assurance of PNT data. Both the built and marine environments are complex and offer significant challenges to the seamless capture of spatio temporally referenced PNT sensor data due to weather, building shadow, radio interference, platform instability and inaccessibility. In addition, real-time monitoring of continuous PNT quality data from multiple sources creates far too muchdata to be communicated cost-effectively to, and be managed by, a central database. Hence, novel data reduction methods must be created. The project will develop new methods for intelligent, adaptive localised data gathering (including learning normal data signatures and adjusting thresholds autonomously), storage and filtering - critical to the markets identified. Reduced data will be communicated back to a central server to allow user access for PNT qualitymonitoring. Reliable PNT integrity assurance at point of use requires 3 independent timing or navigation data references to identify and mitigate the presence of interference or jamming of the PNT signals. The project will investigate the use of eLoran, GNSS and timing signals for this purpose, to gather precise and unambiguous data. GAARDIAN will enable users to reliably make critical operational decisions based on unambiguous localised PNT integrity (quality) knowledge.
StatusFinished
Effective start/end date1/10/0831/03/11

Funding

  • Engineering and Physical Sciences Research Council

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  • Research Output

    GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: Interhemispheric comparison

    Prikryl, P., Ghoddousi-Fard, R., Spogli, L., Mitchell, C. N., Li, G., Ning, B., Cilliers, P. J., Sreeja, V., Aquino, M., Terkildsen, M., Jayachandran, P. T., Jiao, Y., Morton, Y. T., Ruohoniemi, J. M., Thomas, E. G., Zhang, Y., Weatherwax, A. T., Alfonsi, L., De Franceschi, G. & Romano, V., 2 Jun 2015, In : Annales Geophysicae. 33, 6, p. 657-670 14 p.

    Research output: Contribution to journalArticle

    Open Access
  • 10 Citations (Scopus)

    Using sparse regularization for multi-resolution tomography of the ionosphere

    Panicciari, T., Smith, N. D., Mitchell, C. N., Da Dalt, F. & Spencer, P. S. J., 2015, In : Nonlinear Processes in Geophysics. 22, 5, p. 613-624 12 p.

    Research output: Contribution to journalArticle

  • 1 Citation (Scopus)

    Further observations of GPS satellite oscillator anomalies mimicking ionospheric phase scintillation

    Benton, C. J. & Mitchell, C. N., Jul 2014, In : GPS Solutions. 18, 3, p. 387-391 5 p.

    Research output: Contribution to journalArticle

  • 6 Citations (Scopus)