నైరూప్య

Remote RF Spectrum Monitoring System for Giant Metric Radio Telescope

Prof. N.M Karajanagi, Priya Karhade, Sonal Vaidya, Lakhan Bajaj, Akshay Hagawane

GMRT (Giant Meter wave Radio Telescope) is the world largest telescope operating at meter wavelength, it is located in Khodad, Dist: Pune (India). It consists of 30 antennas placed in ‘Y’ shape within the radius of 25 kms. To keep the system healthy and to check up the power stability RF power monitoring is necessary. From 30 antennas, 60 monitoring channels i.e. left hand circular polarized and right hand circular polarized signals from each antenna are fetched. Through RF switch one signal is selected from 60 signals thus single signal is monitored at a time. For monitoring and controlling signals National Instrument’s LabVIEW software is used. LabVIEW is a graphical programming software tool which is used for controlling Spectrum Analyzer. Signal’s power and respective time is stored in text format for further analysis. Online monitoring of signals is also possible from any location so that anyone can access that information. The acquired information is useful for Astronomical research.