Accession Number : ADP004352

Title :   A Computer Analysis of the RF Performance of a Ground-Mounted, Air-Supported Radome,

Corporate Author : GEORGIA INST OF TECH ATLANTA SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Punnett,M. B. ; Joy,E. B.

Report Date : 1984

Pagination or Media Count : 8

Abstract : Several reports and actual operating experience have highlighted the degradation of RF Performance which can occur when SSR or IFF antenna are mounted above primary search antenna within metal space frame or dielectric space frame radomes. These effects are usually attributed to both the high incidence angles and sensitivity of the low gain antennae to sidelobe changes due to scattered energy. Although it has been widely accepted that thin membrane radomes would provide superior performance for this application, there has been little supporting documentation. A plane-wave-spectrum (PWS) computer-based radome analysis was conducted to assess the performance of a specific air-supported radome for the SSR application. In conducting the analysis a mathematical model of a modern SSR antenna was combined with a model of an existing Birdair radome design.

Descriptors :   *Radomes, Computer aided diagnosis, Antennas, IFF systems, Mathematical models, Sidelobes, Membranes, Computer applications, Angle of incidence, Gain, Low level, Searching, Energy, Scattering, Thinness

Distribution Statement : APPROVED FOR PUBLIC RELEASE