Accession Number : ADD004013

Title :   Monopulse, Fan-Beam, Search-Radar System with Improved Height and Azimuth Determination.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Cantrell,Ben H

Report Date : 24 May 1977

Pagination or Media Count : 28

Abstract : Multipath signals are eliminated at all but the lowest elevation angles allowing monopulse techniques to be used to determine target height and azimuth in a two-dimensional, fan-beam, search-radar system. A narrow-azimuth fan beam is oriented at an angle to the vertical plane and has its boresight centered approximately on the horizon so that a V-beam is formed by the direct beam and the portion of the direct beam reflected from the surface (i.e., the portion that is below the horizon). The reflected beam does not interfere with the direct beam except in a multipath region near the reflecting surface. Frequency diversity or a receive-only beam in the vertical plane may be used to determine if a target is in multipath region. (Author)

Descriptors :   *Patent applications, *Search radar, *Monopulse radar, Height finding, Azimuth, Radar targets, Boresighting, Two dimensional, Multipath transmission

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE