Aperture averaging of optical scintillations in CO2 DIAL

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Author
Nelson, Douglas H.
Petrin, Roger R.
Schmitt, Mark J.
Whitehead, Michael C.
Walters, Donald L.
Date
1997-02Metadata
Show full item recordAbstract
Atmospheric turbulence causes several effects on a propagating laser beam We have previously
studied the effects of beam spreading and beam wander, and feel we have a good understanding of
their impact on CO2 DIAL. Another effect is scintillation where atmospheric turbulence causes
irradiance fluctuations within the envelope of the beam profile. We believe that scintillation at the target plays an important role in LIDAR return statistics. A Huygens-Fresnel wave optics computer simulation for propagating beams through atmospheric optical turbulence has been previously developed. We modify this simulation to include the effects of reflective speckle and examine its application in comparison with experimental data.
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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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