Prototype LPDA Tracking System for the Gauribidanur Radioheliograph

Details Prototype LPDA Tracking System for the Gauribidanur Radioheliograph Prototype LPDA Tracking System for the Gauribidanur Radioheliograph

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..345..371s&link_type=abstract

From Clark Lake to the Long Wavelength Array: Bill Erickson's Radio Science ASP Conference Series, Vol. 345, Proceedings of the

Physics

Scientific paper

In order to observe transient and time-varying solar coronal events like intense radio bursts and Coronal Mass Ejections at metric wavelengths over a prolonged duration, the current meridian-transit instrument, that is the Gauribidanur Radioheliograph (GRH), requires upgradation to a mode, that would track their spatio-spectral and temporal evolution. The scheme has been deployed on the scale of a prototype to the GRH, so that multi-frequency radio imaging and spectral observations could be carried-out unhindered for about four hours every day, in the 30 - 150 MHz range. The "tracking system" is implemented based on electronic beam-steering techniques, employing the time-delay control concept, at an interference-free frequency of 77.5 MHz

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