Accession Number:

ADA025768

Title:

Tracker Backscatter Study.

Descriptive Note:

Final rept. 3 Nov 75-31 May 76,

Corporate Author:

LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CALIF PALO ALTO RESEARCH LAB

Report Date:

1976-05-01

Pagination or Media Count:

86.0

Abstract:

An experimental and analytical investigation of laser aerosol backscatter as it may affect hot-spot tracking was performed. Scattering measurements forward and 177 degrees backscatter were made with an infrared radiometer and the TRW Baseline Demonstration Laser at the Capistrano test site in Southern California as part of the JAN propagation test Series A and B. Twenty-two tests of backscatter were conducted at low power 800W and high power 40kW with three spectral filters in the radiometer. Mie scattering calculations were made to predict the scattering coefficient and compare it with the measured value. Meteorological data were provided by the JAN propagation council and included temperature, relative humidity, wind velocity, total extinction, and aerosol data. Extrapolations of the verified models to higher laster powers, on-axis tracking through an annular beam, and to maritime aerosols were made.

Subject Categories:

  • Infrared Detection and Detectors
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE