Radio Frequency Interference Mitigation at the WSRT

Abstract

The sensitivity of radio astronomical stations is often limited by man-made radio frequency interference (RFI) due to a variety of terrestrial activities. An RFI mitigation subsystem (RFIMS) based on real-time digital signalprocessing is proposed here for the Westerbork Synthesis Radio Telescope based on a powerful field programmable gate array processor. In this system the radio astronomy signals polluted by RFI are "cleaned" with the RFIMS before routine back-end correlation processing takes place. The high temporal and frequency resolution of RFIMS allows the detection and excision of RFI better than do standard radio telescope back-end configurations.

17 pages, 17 figures

Cited by in corpus (18)

• A morphological algorithm for improving radio-frequency interference detection
• Post-correlation radio frequency interference classification methods
• The LOFAR radio environment
• Deep residual detection of radio frequency interference for FAST
• Deep Learning improves identification of Radio Frequency Interference
• Statistically Stable Estimates of Variance in Radioastronomical Observations as Tools for RFI Mitigation
• SERPent: Automated reduction and RFI-mitigation software for e-MERLIN
• Fourier domain excision of periodic radio frequency interference
• Implementing RFI mitigation in Radio Science
• Learning to detect RFI in radio astronomy without seeing it
• A LOFAR RFI detection pipeline and its first results
• The brightness and spatial distributions of terrestrial radio sources
• Radio Frequency Interference Detection Using Efficient Multi-Scale Convolutional Attention UNet
• Near-field imaging of local interference in radio interferometric data: Impact on the redshifted 21 cm power spectrum
• Implementing and Characterizing Real-time Broadband RFI Excision for the GMRT Wideband Backend
• A Self-Learning Neural Network Approach for RFI Detection and Removal in Radio Astronomy
• Software correlators as testbeds for RFI algorithms
• An Experimental setup to develop RFI mitigation techniques for radio astronomy