Accession Number : ADA955974

Title :   Radar Cross Section of Ship Targets. 3.

Descriptive Note : Rept. for 1 Feb-30 Apr 44,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Ament, W. S. ; Katzin, Martin ; MacDonald, F. C.

Report Date : 27 JUN 1944

Pagination or Media Count : 32

Abstract : The numerical values of the radar cross sections of combat ships presented in an earlier report are supplemented by measured values on ships of other types. The measurements are examined to determine the way in which they vary with frequency for a ship of given type and aspect. It is found that the far-zone radar cross sections increase roughly with the fourth or fifth power of the frequency. Abnormal propagation conditions have been observed to increase the far-zone radar cross section by 10 decibels. The reflections from the antennas of air-search radars have been measured on some of the larger ships. Because of its elevated position, the reflections from the antenna in its broadside aspect predominate when the ship is partially below the horizon, although not at closer ranges. (RH)

Descriptors :   *PROPAGATION, *RADAR CROSS SECTIONS, *SHIPS, *TARGETS, ABNORMALITIES, FREQUENCY, POSITION(LOCATION), POWER, VALUE, WARFARE.

Subject Categories : Active & Passive Radar Detection & Equipment
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE