Accession Number : AD0612790

Title :   PRECISION RANGE-GATED IMAGING TECHNIQUES.

Descriptive Note : Rept. for Mar-Sep 64,

Corporate Author : AIR FORCE AVIONICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Neumann,Don B.

Report Date : JAN 1965

Pagination or Media Count : 23

Abstract : By properly delaying the 50-nanosecond shutter of an image-converter camera with respect to a transmitted 60- nanosecond illuminating pulse from a Q-switched ruby laser, it is shown that the image formed may be limited to only those objects located in a certain range interval. Using this technique, it is shown that the visibility through atmospheric scattering mediums (such as snow) may be greatly increased. In addition, it is shown that the use of the technique enables range information to be added to an image (such as the elevation contours in an aerial photograph). (Author)

Descriptors :   (*PHOTOGRAPHIC LIGHTING SYSTEMS, LASERS), (*LASERS, PHOTOGRAPHIC LIGHTING SYSTEMS), (*RANGE FINDING, LASERS), AERIAL PHOTOGRAPHY, PHOTOGRAPHIC IMAGES, CAMERA CONTROLS, KERR CELLS, FIBER OPTICS, TIMING DEVICES, RUBY, CRYSTALS

Distribution Statement : APPROVED FOR PUBLIC RELEASE