Accession Number:

ADA050122

Title:

Long-Range Holography Field Experiments.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Report Date:

1977-10-31

Pagination or Media Count:

25.0

Abstract:

An active holographic and a conventional imaging techniques were compared, with the images for both cases taken simultaneously at a range of 1 km. A 1-joule Q-switched ruby laser with a 1-m coherence length was used as the light source. To obtain both a conventional image and a holographic interference pattern simultaneously through one aperture, a beamsplitter and two cameras were mounted at the focus of a 36-cm-diameter telescope. Tests were conducted for several weeks, involving 257 exposures. At best, holographic imaging showed an improvement in resolution over conventional imaging by a factor of 2 but with a decrease in signal-to-noise ratio. Author

Subject Categories:

  • Lasers and Masers
  • Holography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE