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Modeling bistatic spectral measurements of temporally evolving reflected and emitted energy from a distant and receding target
J. Appl. Remote Sens. 5, 053549 (Sep 02, 2011); http://dx.doi.org/10.1117/1.3626025
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Add to FacebookThe Air Force Institute of Technology's Center for Directed Energy developed the High Energy Laser End-to-End Operational Simulation (HELEEOS) model in part to quantify the performance variability in laser propagation created by the natural environment during dynamic engagements. As such, HELEEOS includes a fast-calculating, first principles, worldwide surface-to-100 km, atmospheric propagation, and characterization package. This package enables the creation of profiles of temperature, pressure, water vapor content, optical turbulence, atmospheric particulates, and hydrometeors as they relate to line-by-line layer transmission, path, and background radiance at wavelengths from the ultraviolet to radio frequencies. In the current paper an example of a unique high fidelity simulation of a bistatic, time-varying five band multispectral remote observation of energy delivered on a distant and receding test object is presented for noncloudy conditions with aerosols. The multispectral example emphasizes atmospheric effects using HELEEOS, the interaction of the energy and the test object, the observed reflectance, and subsequent hot spot generated. A model of a sensor suite located on the surface is included to collect the diffuse reflected in-band laser radiation and the emitted radiance of the hot spot in four separate and spatially offset midwave infrared and longwave infrared bands. Particular care is taken in modeling the bidirectional reflectance distribution function of the delivered energy/target interaction to account for both the coupling of energy into the test object and the changes in reflectance as a function of temperature. The architecture supports any platform-target-observer geometry, geographic location, season, and time of day, and it provides for correct contributions of the sky-earth background. The simulation accurately models the thermal response, kinetics, turbulence, base disturbance, diffraction, and signal-to-noise ratios.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
History
Received Jul 28, 2010
Accepted Jul 28, 2011
Revised Jul 18, 2011
Published online Sep 02, 2011
Accepted Jul 28, 2011
Revised Jul 18, 2011
Published online Sep 02, 2011
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Salvatore J. Cusumano, Steven T. Fiorino, Richard J. Bartell, Matthew J. Krizo, William F. Bailey, Rebecca L. Beauchamp and Michael A. Marciniak, "Modeling bistatic spectral measurements of temporally evolving reflected and emitted energy from a distant and receding target",
J. Appl. Remote Sens. 5, 053549 (Sep 02, 2011); http://dx.doi.org/10.1117/1.3626025
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