A HIGHLY DIRECTIVE ROTATING ARRAY FOR THE OBSERVATION OF FIELD-ALIGNED IRREGULARITIES

Abstract

The need for a highly directive rotating array is briefly discussed and the factors determining the over-all array design are brought forward. Within the limits imposed by economy, various types of array are analysed, the choice finally residing in 4 Yagi aerials at a spacing of 1.1 wavelengths. Suitable methods have been devised for feeding each Yagi with the appropriate current determined according to a DolphTchebyscheff analysis. Using a T-R switch, the effective total beam width at 16 mc is 8 degrees. Aerial test patterns, and records of echoes from field-aligned ionisation are given. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1960
Accession Number
AD0252605

Entities

People

  • J.a. Thomas
  • R.w.e. Mcnicol

Organizations

  • Queen Mary University of London

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Chemical Reactions
  • Directives
  • Ionization
  • Observation

Readers

  • Phased Array Antenna Design.
  • Plasma Physics / Magnetohydrodynamics
  • Unmanned Aerial System (UAS) Autonomous Capabilities and Mission Reconnaissance.

Technology Areas

  • Space
  • Space - Orbital Debris