Accession Number:

AD0641878

Title:

UNDERWATER RANGE-GATED PHOTOGRAPHY,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE TEST STATION CHINA LAKE CALIF

Personal Author(s):

• Heckman,Paul J.

Report Date:

1966-10-01

Pagination or Media Count:

32.0

Abstract:

The applicability of underwater optical range gating, designed to extend the maximum range of underwater photography, was demonstrated in a series of experiments. With black tape on Scotchlite as the target. comparison photographs of gated and non-gated exposures showed promise in the clarity of the gated pictures, an improvement attributable to the elimination of most of the backscattered light. The apparatus is described and a sample of the data obtained at various target distances is presented and discussed. An expression for the energy density available at the receiver using the gating technique and a correlation of this expression with the experimental data are also presented. Author

Descriptors:

• (*UNDERWATER PHOTOGRAPHY
• RANGE GATING)
• LASERS
• LIGHT TRANSMISSION
• UNDERWATER LIGHT
• OPTICAL RADAR
• BACKSCATTERING
• PHOTOGRAPHY

Subject Categories:

• Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE