Accession Number:

AD0646629

Title:

SELECTION OF A VLF RECEIVING ANTENNA FOR THE BOLIVIAN SOLAR ECLIPSE SITE

Descriptive Note:

Research rept.

Corporate Author:

NAVAL ORDNANCE LAB CORONA CA

Personal Author(s):

Report Date:

1966-10-31

Pagination or Media Count:

40.0

Abstract:

Properties of the ionosphere D region under conditions of a solar total eclipse were measured utilizing a VLF receiving system in Bolivia. The signals were transmitted from southeast Brazil along the path of totality for the 12 November 1966 solar eclipse. This report describes the study conducted for the selection of a VLF receiving antenna which was to provide maximum discrimination against atmospheric noise in the 9- to 31-kc band. The antenna selected was a two-loop superdirective antenna with the loop elements rotated 25 degrees from the antenna axis. The report describes the criteria utilized in selecting the antenna, discusses other possible choices, and evaluates the performance of the antenna in the light of various component tolerances.

Subject Categories:

  • Celestial Mechanics
  • Electrical and Electronic Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE