Accession Number:

AD0252605

Title:

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

Descriptive Note:

Corporate Author:

QUEEN MARY COLL LONDON (UNITED KINGDOM)

Personal Author(s):

Report Date:

1960-09-01

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE