Accession Number:

AD0760548

Title:

Investigation of Laser Propagation Phenomena

Descriptive Note:

Quarterly technical rept. no. 3, 1 Apr 1972-31 Mar 1973

Corporate Author:

OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Personal Author(s):

• Collins, Jr, S. A.

Report Date:

1973-03-01

Pagination or Media Count:

17.0

Abstract:

The report deals with one aspect of restoration of atmospherically degraded images the problem of defining isoplanatic patch size. The general restoration situation is considered to indicate the situation where the concept of isoplanaticism is appropriate. Then a model is considered and some problems of the Fourier transform technique of defining isoplanatic patch are pointed out. If the degraded reference function is not identical with the point response function then singularities in the spectrum of the intensity of the restored image can give rise to negative image functions. A measure for indexing this effect is indicated.

Descriptors:

• *COHERENT RADIATION
• ANGLE OF ARRIVAL
• ATMOSPHERIC MOTION
• ATTENUATION
• INFRARED IMAGES
• INFRARED LASERS
• INFRARED RADIATION
• LIGHT TRANSMISSION
• POWER SPECTRA
• PROPAGATION
• REFRACTIVE INDEX

Subject Categories:

• Atmospheric Physics
• Lasers and Masers
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE