Karoo Array Telescope: Lightning protection issues and RFI

Author

Wiid, Pieter Gideon ; Reader, Howard Charles ; Geschke, Riana Helena

Author_Institution

Dept. of Electr. & Electron. Eng., Stellenbosch Univ., Matieland, South Africa

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

A computational electromagnetic (CEM) code and a reduced scale model were used to characterize the design of the Karoo Array Telescope (MeerKAT), South Africa´s demonstrator for the Square Kilometer Array (SKA). Different excitation techniques were used in the CEM code and are compared to actual scale model measurements in an anechoic chamber. With verified computational modeling, the optimized lightning down conductor layout and earth termination system interconnections were investigated, keeping cost and RFI in mind.

Keywords

computational electromagnetics; earthing; lightning; lightning protection; radioastronomy; radiofrequency interference; radiotelescopes; Karoo Array Telescope; MeerKAT; RFI; South Africa; Square Kilometer Array; anechoic chamber; computational electromagnetic code; earth termination system interconnection; excitation technique; lightning protection issues; optimized lightning down conductor layout; reduced scale model; Computational modeling; Conductors; Current measurement; Earth; Lightning protection; Steel;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050740

Filename

6050740