SELECTION OF A VLF RECEIVING ANTENNA FOR THE BOLIVIAN SOLAR ECLIPSE SITE
NAVAL ORDNANCE LAB CORONA CA
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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.
- Celestial Mechanics
- Electrical and Electronic Equipment
- Radiofrequency Wave Propagation