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Electronics and FluidicsElectrooptical and Optoelectronic Devices

Microphysical Influences on Electro-Optic Signal Propagation in Complex Areas

Authors: Arnold Tunick; Gary Carhart; ARMY RESEARCH LAB ADELPHI MD
Abstract:
This paper presents a finite-difference computer model to predict the microphysical influences on electro-optic signal propagation in complex areas. e.g.. around single and mutltiple building arrays and forests. The model incorporates physics-based algorithms to account for advection. the pressure gradient. eddy diffusion. and drag forces due to vegetation (e.g.. open fields or forests). Note that mechanisms to account for heating, cooling, and moisture flux are not included at this time. Our main concern is to maintain a computationally efficient program code that is also flexible with regard to modifications and debugging. This allows us to apply the computer model to different kinds of tests. Nevertheless, we anticipate that this research will contribute much useful information related to laser optic signal propagation such a the the impact of buildings and forests on future optical turbulence (Cn2) calculations.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Final rept. Jun-Nov 2005
Pages: 22
Report Date: DEC 2005
Report Number: A162344
Keywords relating to this report:
*ELECTROOPTICS
*INFRARED IMAGES
ADVECTION
BUILDINGS
COMPUTATIONAL FLUID DYNAMICS
COMPUTERIZED SIMULATION
DIFFUSION
DRAG
EDDY CURRENTS
FINITE DIFFERENCE THEORY
FORESTS
LASER BEAMS
PRESSURE GRADIENTS
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