Small-angle approximation to the transfer of narrow laser beams in anisotropic scattering media / Michael A. Box and Adarsh Deepak ; prepared for Marshall Space Flight Center under contract NAS8-33135.
The broadening and the signal power detected of a laser beam traversing an anisotropic scattering medium were examined using the small-angle approximation to the radiative transfer equation in which photons suffering large-angle deflections are neglected. To obtain tractable answers, simple Gaussia...
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. : [Springfield, Va.] :
National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [For sale by the National Technical Information Service],
1981.
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| Series: | NASA contractor report ;
NASA CR-3407. |
| Subjects: |
MARC
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| 245 | 1 | 0 | |a Small-angle approximation to the transfer of narrow laser beams in anisotropic scattering media / |c Michael A. Box and Adarsh Deepak ; prepared for Marshall Space Flight Center under contract NAS8-33135. |
| 260 | |a Washington, D.C. : |b National Aeronautics and Space Administration, Scientific and Technical Information Branch ; |a [Springfield, Va.] : |b [For sale by the National Technical Information Service], |c 1981. | ||
| 300 | |a vi, 40 pages : |b illustrations ; |c 27 cm. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a unmediated |b n |2 rdamedia. | ||
| 338 | |a volume |b nc |2 rdacarrier. | ||
| 490 | 1 | |a NASA contractor report ; |v 3407. | |
| 500 | |a "April 1981"--Cover. | ||
| 504 | |a Includes bibliographical references. | ||
| 500 | |a Subject Category 74. | ||
| 530 | |a Distributed to depository libraries in microfiche; also available via the Internet. | ||
| 520 | 3 | |a The broadening and the signal power detected of a laser beam traversing an anisotropic scattering medium were examined using the small-angle approximation to the radiative transfer equation in which photons suffering large-angle deflections are neglected. To obtain tractable answers, simple Gaussian and non-Gaussian functions for the scattering phase functions are assumed. Two other approximate approaches employed in the field to further simplify the small-angle approximation solutions are described, and the results obtained by one of them are compared with those obtained using small-angle approximation. An exact method for obtaining the contribution of each higher order scattering to the radiance field is examined but no results are presented. | |
| 520 | 0 | |a NASA thesaurus headings: Anisotropic media - Approximation - Atmospheric scattering - Lasing - Radiative transfer - Transmittance - Atmospheric optics - Clouds - Fog - Fourier transformation - Functions (Mathematics) - Photons - Radiance - Smoke. | |
| 536 | |a NASA contract |b NAS8-33135. | ||
| 650 | 0 | |a Laser beams |x Scattering. |0 http://id.loc.gov/authorities/subjects/sh85074771. | |
| 650 | 0 | |a Laser speckle. |0 http://id.loc.gov/authorities/subjects/sh85074784. | |
| 700 | 1 | |a Deepak, Adarsh. |0 http://id.loc.gov/authorities/names/n84180222 |1 http://isni.org/isni/0000000115606222. | |
| 710 | 1 | |a United States. |b National Aeronautics and Space Administration. |b Scientific and Technical Information Branch. |0 http://id.loc.gov/authorities/names/n78091122. | |
| 710 | 2 | |a George C. Marshall Space Flight Center. |0 http://id.loc.gov/authorities/names/n79105937 |1 http://isni.org/isni/0000000122384912. | |
| 710 | 2 | |a Institute for Atmospheric Optics & Remote Sensing. |0 http://id.loc.gov/authorities/names/n79039087. | |
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