Wave optics simulation of atmospheric turbulence and reflective speckle effects in CO2 differential absorption LIDAR (DIAL)

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Author
Nelson, Dougles H.
Petrin, Roger R.
MacKerrow, Edward P.
Schmitt, Mark J.
Quick, Charles R.
Zardecki, Andrew
Porch, William M.
Whitehead, Michael
Walters, Donald L.
Date
1998-04Metadata
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The measurement sensitivity of C02 differential absorption LIDAR (DIAL) can be affected by a number of different processes. We will address the interaction of two of these processes: effects due to beam propagation through atmospheric turbulence and effects due to reflective speckle. Atmospheric
turbulence affects the beam distribution of energy and phase on target. These effects include beam
spreading, beam wander and scintillation which can result in increased shot-to-shot signal noise.
In addition, reflective speckle alone has a major impact on the sensitivity of C02 DIAL. The
interaction of atmospheric turbulence and reflective speckle is of great importance in the performance of a DIAL system.. A Huygens Fresnel wave optics propagation code has previously been developed at the Naval Postgraduate School that models the effects of atmospheric turbulence as propagation through a series of phase screens with appropriate atmospheric statistical characteristics. This code has been modified to include the effects of reflective speckle. The performance of this modified code with respect to the combined effects of atmospheric turbulence and reflective speckle is examined. Results are compared with a combination of experimental data and analytical models.
Description
AEROSENSE 98 Meeting Orlando Fl, April 1998
The article of record as published may be found at http://dx.doi.org/10.1117/12.323933
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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