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13 May 2011 DRDC's approach to IR scene generation for IRCM simulation
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Abstract
An object oriented simulation framework, called KARMA, was developed over the last decade at Defence Research and Development Canada - Valcartier (DRDC Valcartier) to study infrared countermeasures (IRCM) methods and tactics. It provides a range of infrared (IR) guided weapon engagement services from constructive to HWIL simulations. To support the increasing level of detail of its seeker models, DRDC Valcartier recently developed an IR scene generation (IRSG) capacity for the KARMA framework. The approach relies on Open-Source based rendering of scenes composed of 3D models, using commercial off-the-shelf (COTS) graphics processing units (GPU) of standard PCs. The objective is to produce a high frame rate and medium fidelity representation of the IR scene, allowing to properly reproduce the spectral, spatial, and temporal characteristics of the aircraft's and flare's signature. In particular, the OpenSceneGraph library is used to manage the 3D models, and to send high-level rendering commands. The atmospheric module allows for accurate, run-time computation of the radiative components using a spectrally correlated wide-band mode. Advanced effects, such as surface reflections and zoom anti-aliasing, are computed by the GPU through the use of shaders. Also, in addition to the IR scene generation module, a signature modeling and analysis tool (SMAT) was developed to assist the modeler in building and validating signature models that are independent of a particular sensor type. Details of the IR scene generation module and the associated modeling tool will be presented.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-François Lepage, Marc-André Labrie, Eric Rouleau, Jonathan Richard, Vincent Ross, Denis Dion, and Nathalie Harrison "DRDC's approach to IR scene generation for IRCM simulation", Proc. SPIE 8015, Technologies for Synthetic Environments: Hardware-in-the-Loop XVI, 80150F (13 May 2011); https://doi.org/10.1117/12.882804
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