5 August 2004 A GIS-based simulation architecture and prototype for realistic spectral scene generation of vegetated areas
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Abstract
Vehicles concealed in highly cluttered, vegetated scene environments pose significant challenges for passive sensor systems and algorithms. System analysts working hyperspectral exploitation research require an at-aperture simulation capability that allows them to reliably investigate beyond the highly-limited scenarios that expensive field data sets afford. To be useful to the analyst, such a simulation should address the following requirements: (1) the ability to easily generate scene representations for arbitrary Earth regions of tactical interest; (2) the ability to represent scene components, like terrain, trees and bushes, to an extremely high spatial resolution for calculation of accurate multiple spectral reflections, occlusions and shadowing; (3) the ability to stimulate the 3D scene with realistic natural spectral irradiances for arbitrary 3D model atmospheres; (4) the ability to appropriately integrate constantly improving, rigorous thermal, spectral signature and atmospheric propagation models; (5) the ability to efficiently render at-aperture hyperspectral data sets in a reasonable run-time. Herein the authors describe their work toward a comprehensive ray-tracer-based simulation architecture and prototype capability that addresses these requirements. They describe their development of a GIS-based toolset for database generation, tools for 3D vegetated terrain-model development, and a prototype raytracer-based spectral scene generator.
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Christopher E. Fink, Christopher E. Fink, Joseph Russ Moulton, Joseph Russ Moulton, Michael Ortalano, Michael Ortalano, John Helmsen, John Helmsen, Alexander Soiguine, Alexander Soiguine, Raymond Kaplan, Raymond Kaplan, William Seng, William Seng, Raymond E. Haren, Raymond E. Haren, } "A GIS-based simulation architecture and prototype for realistic spectral scene generation of vegetated areas", Proc. SPIE 5431, Targets and Backgrounds X: Characterization and Representation, (5 August 2004); doi: 10.1117/12.542488; https://doi.org/10.1117/12.542488
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