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PEGASUS: A frame for GNSS Data Evaluation

Pegasus is a software framework for GNSS data analysis, providing data output, storage, and processing steps. It includes modules for data logging, convertor, plausibility check, aircraft dynamics, and graphical visualization.

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PEGASUS: A frame for GNSS Data Evaluation

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  1. ICCAE Course – Software Outline PEGASUS:A frame for GNSS Data Evaluation

  2. P C Data Output L O Production Data Storing D A M D E U P Transfer I C S U S Raw ASCII Checked O I T Output P Data D B A Data Data L I I T A N L I Y G I O Rx T N Y S Data Recording Data Processing Steps Pegasus – A frame for GNSS data analysis • Structure • Main Frame • Modules Data Logging CONVERTOR Plausibility check WinGPSAll Truth Ref MFile Runner

  3. Pegasus - FRAME • Frame • automation of the data processing • easy access to all the data • traceability of the process

  4. Pegasus - MODULES • Convertor • translate receiver-native data into a generic format • receiver implementation • Input - receiver data • Output - ASCII data • WinGPSAll • calculates a position solution and protection levels • Input - Convertor files • Output - data file (position and time solution data, protection levels and position errors)

  5. Pegasus - MODULES • Plausibility Check • performs a number of user defined checks on the data • input - modules data • output - log file with check information • rules • Aircraft Dynamics • computes the position error for dynamic data • input - position data • output - error data • reference data - provided externally • M-file runner - FileWatch • visualization and detailed data analysis on the results

  6. Graphical visualization: M-file runner • MFile Runner • Visualisation - Matlab • Input - Convertor, WinGPSAll • Output - graphical presentations

  7. Graphical visualization: M-file runner • Position errors and protection levels

  8. Graphical visualization: M-file runner • Message distribution graphics

  9. Graphical visualization: M-file runner • Ionospheric delay

  10. Graphical visualization: Filewatch

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