Accession Number:

ADA089720

Title:

MISERS BLUFF Electromagnetic Propagation Experiments. Volume II. Preliminary Results of the Laser Experiment.

Descriptive Note:

Topical rept. 1 Oct 78-31 Mar 79,

Corporate Author:

SRI INTERNATIONAL MENLO PARK CA

Personal Author(s):

Report Date:

1979-10-01

Pagination or Media Count:

28.0

Abstract:

A three-wavelength laser radar was fielded at MISERS BLUFF to measure backscatter and extinction values of an explosion-produced dust cloud at wavelengths of 0.532 micrometers, 1.06 micrometers, and 10.6 micrometers. These measurements are important to military designers operating active optical systems in such an environment, and for the understanding of cloud dynamics. Good-quality backscatter data at the three wavelengths were obtained to T 30 min on both events. Better-quality transmission data were taken on the second event. At early times, the attenuation in the MBII-2 cloud was greater than 144 dB for the 1.06 micrometers wavelength, and 124 dB and 70dB for the 0.532-micrometers and 10.6-micrometers wavelengths, respectively. Further analysis will be required to assess the backscatter extinction for the three wavelengths. Comparisons will be made with millimeter-wave radar results and in-situ particle-sampling data. Author

Subject Categories:

  • Lasers and Masers
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE