A GIS-based simulation architecture and prototype for realistic spectral scene generation of vegetated areas

Christopher E. Fink; Joseph Russ Moulton Jr.; Michael Ortalano; John Helmsen; Alexander Soiguine; Raymond Kaplan; William Seng; Raymond E. Haren

doi:10.1117/12.542488

5 August 2004 A GIS-based simulation architecture and prototype for realistic spectral scene generation of vegetated areas

Christopher E. Fink, Joseph Russ Moulton Jr., Michael Ortalano, John Helmsen, Alexander Soiguine, Raymond Kaplan, William Seng, Raymond E. Haren

Author Affiliations +

Proceedings Volume 5431, Targets and Backgrounds X: Characterization and Representation; (2004) https://doi.org/10.1117/12.542488
Event: Defense and Security, 2004, Orlando, Florida, United States

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, Joseph Russ Moulton Jr., Michael Ortalano, John Helmsen, Alexander Soiguine, Raymond Kaplan, William Seng, and 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); https://doi.org/10.1117/12.542488

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KEYWORDS

Atmospheric modeling

Databases

3D modeling

Reflection

Bidirectional reflectance transmission function

Computer programming

Geographic information systems

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