Accession Number:

ADA133587

Title:

The Calculated Performance of Some Radar and Transmissometer Systems in Rain and Fog at 35, 94, 140 and 240 GHz. Volume 1.

Descriptive Note:

Final rept. 1 Apr 81-31 Jul 82,

Corporate Author:

OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Personal Author(s):

Report Date:

1982-12-01

Pagination or Media Count:

148.0

Abstract:

The effects of rain and fog are examined for three transmissometer and three radar systems double-ended direct path with square-wave modulation and square-law detector single-ended folded path with square-wave modulation and square-law detection, single-ended CW with quadrature receiver, single-ended pulsed with post-detection pulse integration, single-ended pulsed with quadrature receiver, and single-ended with linear FM pulse compression. Computer algorithms were developed to find the probability of detection as a function of range for the radar systems, and the signal-to-noise ratio as a function of range for the transmissometer systems. These algorithms are used recursively to determine the range at which specified performance is attained as a function of rain rate of fog liquid water content. Calculated results are presented for exponential drop-size distributions provision has been made for the extension to other distributions. Volume I contains the theory and results computer code listings and directions for use of the codes are given in Volume II. Author

Subject Categories:

  • Atmospheric Physics
  • Cybernetics
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE