A Close Approach HF D.F. System for Tactical Use Especially in Heavily Timbered Areas

Abstract

The distance factor is of great importance in setting the accuracy and target density of close approach HF d.f. systems. Several methods of operational deployment are discussed. The attenuation of the forest wave, interference produced by the skywave and the sensitivity of simple aerials are discussed. A spaced loop system would have advantages at night in reducing skywave effects. Various aspects of the performance of such systems are discussed. It is concluded that the most practical system which could be put into the field quickly could be vehicle mounted. In heavily timbered areas, it would have an accuracy of 250 m on daytime tasks at ranges of the order of 5 km. Range at night would be limited to less than 3 km, although there is some prospect of improving this by using time of arrival selection techniques.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA062369

Entities

People

  • R. F. Treharne

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Attenuation
  • Australia
  • Buildings And Structures
  • Deployment
  • Electronics
  • Electronics Laboratories
  • Research Facilities
  • Sensitivity

Readers

  • Phased Array Antenna Design.
  • Sensor Fusion and Tracking Systems.
  • Theoretical Analysis.

Technology Areas

  • Space