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The Strategic Scene Generation Model (SSGM) generates representations of terrain and cloud background images using government standard codes: Generic Scene Simulation Software (GENESSIS) for terrain and Cloud Simulation (CLDSIM) for clouds. The SSGM generates image representations of the plumes of boosting missiles and midcourse hardbo.dy post-boost vehicles, reentry vehicles, and decoys. Plumes are represented using the Standard Plume Flowfield - Version 2 (SPF2) and the Standard Infrared Radiance Model (SIRRM) for altitudes less than 50 km, and the Composite High Altitude Radiance Model (CHARM) 1.2 for altitudes above 50 km. Midcourse vehicles are represented using the BIDIRC software of the Optical Signatures Code (OSC). The plume and midcourse images are overlayed upon background images to generate composite output scenes. This paper presents the automated methodology by which the SSGM interfaces with the user to invoke the execution of the requisite computer codes, formats code output for input to the scene generation process, interpolates and resamples code output to form images, and overlays individual images into composite scenes. This paper also presents overviews of the GENESSIS and CLDSIM codes, including discussions of the procedures used to treat the various radiation mechanisms. Example outputs from GENESSIS and CLDSIM are presented in addition to plume images as they appear when composited with the background images.
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