Investigation of Window Types for S-Band Use

Abstract

Present U.S. Navy Window for the S-band has its maximum effect when used against S-Band radar having horizontally polarized antennas. When used at low altitude (small angles of elevation from the radar), the present S-band Window has little or no effect against radars having vertically polarized antennas. A random-falling type of S-band Window is required for use in rockets and shells to be used to screen surface targets. In this use, elevation angles will always be small. Thirteen Window types were tested, Two new package types which give the desired results are recommended. These are now specified in NavAer Specifications M622. They are type 10270F(017) which contains 34,400 dipoles and type 10397 which contains 60,000 dipoles. The material used in 10270F(017) is particularly adaptable to shell and rocket loading under compression. The 10397 package is light and is recommended for use when weight is the limiting factor.

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1945
Accession Number
AD1187398

Entities

People

  • T. D. Hanscome

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Altitude
  • Compression
  • Elevation
  • Low Altitude
  • Low Elevation
  • Materials
  • Surface Targets

Readers

  • Explosive Engineering.
  • Phased Array Antenna Design.
  • Radar Systems Engineering.