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Proceedings Paper

On the criticality of parameter data transfer in avionic simulations
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Paper Abstract

In many PC-based simulations, message passing is commonly used for transfer of dynamic data between software models. Parameter definition and/or initialization are typically handled differently and may suffer because that data is not transferred to all the required models at any time during a simulation run. Instead multiple and often dissimilar initializations of the same parameters occur in various software modules, much to the chagrin of the configuration control personnel and test engineers. Results from using this approach can be particularly damaging for navigation sensor simulations such as a GPS-aided inertial mode and for flight program software evaluation and validation, where extreme accuracy of results is required. The paper proposes solutions to prevent parameter data mismatch and/or compromise. These solutions are based upon doing a thorough job of critical parameter definition and initialization, given the simulation computer architecture. The solutions are discussed and explained. Included are descriptions of actual cases - examples of parameter mismatch in medium to large scale avionic simulations where accuracy was critical to performance evaluation. Parameter categories critical to accurate evaluations of avionic simulation performance are identified and discussed.

Paper Details

Date Published: 10 May 2007
PDF: 8 pages
Proc. SPIE 6564, Modeling and Simulation for Military Operations II, 656406 (10 May 2007); doi: 10.1117/12.719705
Show Author Affiliations
Richard D. Teichgraeber, Lockheed Martin Aeronautics Co. (United States)

Published in SPIE Proceedings Vol. 6564:
Modeling and Simulation for Military Operations II
Kevin Schum; Dawn A. Trevisani, Editor(s)

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