Accession Number:

AD0255135

Title:

CURVES OF ATMOSPHERIC-ABSORPTION LOSS FOR USE IN RADAR RANGE CALCULATION

Descriptive Note:

Final phase rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1961-03-23

Pagination or Media Count:

29.0

Abstract:

The attenuation of radar signals due to absorption by atmospheric oxygen and water vapor was calculated for a surface-based radar as a function of the target range and elevation angle, for frequencies in the range 100 to 10,000 mc, employing the theory of Van Vleck. The results are presented in the form of curves that are especially adapted to use in calculating radar maximum range. Limitations of the theory, particularly in the assignment of values to the line- breadth factors and in the details of the collision-broadening formulas are discussed. It was concluded that these limitations are not likely to produce serious errors. Comparison is made with attenuation calculations made by others for ray paths through the entire atmosphere.

Subject Categories:

  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE