Accession Number:

AD0783277

Title:

Propagation of Multiwavelength Laser Radiation through Atmospheric Turbulence

Descriptive Note:

Interim technical rept. 1 Dec 1973-30 Apr 1974

Corporate Author:

OREGON GRADUATE CENTER BEAVERTON

Personal Author(s):

Report Date:

1974-05-31

Pagination or Media Count:

85.0

Abstract:

The effects of atmospheric turbulence on target irradiance using a nearfield, wander-tracking laser transmitter have been investigated in detail. A unified analytical and phenomenological treatment of the mean irradiance and its fluctuations is presented, with supporting experimental data. The advantages to be gained through the use of wander cancellation are seen to be substantial, and in many cases larger than predicted by the basic theory. A brief description is also given of the investigation of the short-term statistics of turbulence and scintillations. Theoretical and experimental results have been obtained for the prediction of confidence intervals or data spread in such measurements, and the effects of averaging times. In addition, a computer simulation technique has been formulated for the generation of an ensemble of instantaneous, short propagation paths through turbulence.

Subject Categories:

  • Lasers and Masers
  • Infrared Detection and Detectors
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE