Title :
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
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;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050740
