Abstract Details
| Name: Sachin S. Sherkar Affiliation: NCRA-TIFR Conference ID: ASI2016_730 Title : Testing of New wide-band backend of the upgraded GMRT: Current status and its long-term comparison with the existing software-backend Authors and Co-Authors : Nilesh S. Raskar (NCRA-TIFR) Dr. Dharam Vir Lal (NCRA-TIFR) Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : Giant Metrewave Radio Telescope (GMRT) is world's most sensitive radio interferometer and is currently undergoing a very significant upgrade. One of the key objective of this upgrade is to improve sensitivity, e.g., by increasing the bandwidth of observations from present 32MHz to a target of 400 MHz, etc. In this regard, a new GMRT wide-band backend (GWB) is being developed and is being tested as well. Presently, end-to-end wide-band signal chain is now available on all GMRT antennas and GWB has been in use since February 2014. Here, we present 1) statistical long term stability analysis of the new wide-band system spanning this ~2 year long duration using existing GMRT software backend (GSB) as a benchmark, and 2) sensitivity differences between these two systems, existing GSB and new GWB. |