MULTICHANNEL INTERFERENCE MITIGATION TECHNIQUES IN RADIO ASTRONOMY
作者： Amir Leshem , Alle‐Jan van der Veen , Albert‐Jan Boonstra
DOI: 10.1086/317360
关键词: Radio telescope 、 Interference (wave propagation) 、 Radio astronomy 、 Physics 、 Spatial filter 、 Mobile telephony 、 Signal processing 、 Optics 、 GSM 、 Electromagnetic interference 、 Electronic engineering
摘要: Radio-astronomical observations are increasingly corrupted by radio frequency interference, and on-line detection filtering algorithms becoming essential. To facilitate the introduction of such techniques into astronomy, we formulate astronomical problem in an array signal processing language give to some elementary from that field. We consider two topics detail: interference rank estimation short-term covariance matrices spatial subspace projection. discuss experimental data collected at Westerbork Synthesis Radio Telescope illustrate effectiveness spacetime blanking process on recovery a 3C 48 absorption line presence GSM mobile telephony interference.
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