Real-time RFI excision for the GMRT wideband correlator
- Resource Type
- Conference
- Authors
- Buch, Kaushal D.; Gupta, Yashwant; Bhatporia, Shruti; Nalawade, Swapnil; Naik, Kishor; Ajithkumar, B.
- Source
- 2016 Radio Frequency Interference (RFI) Radio Frequency Interference (RFI). :11-15 Oct, 2016
- Subject
- Geoscience
Signal Processing and Analysis
Real-time systems
Broadband antennas
Correlators
Broadband communication
Robustness
Narrowband
RFI
Median Absolute Deviation
GMRT
Radio Telescope
Correlator
- Language
Real-time RFI excision is developed for the GMRT wideband correlator as part of the upgraded GMRT (uGMRT) project. The technique uses robust statistical estimation and a nonlinear filter to excise broadband and narrowband RFI. This paper provides an overview of the technique and its real-time implementation. The results showing improvement in the signal-to-noise ratio and cross-correlation performance are also provided.