
The increased sensitivity of passive instrumentation in radio astronomy and remote sensing and the intensifying active use of the spectrum have led to an increasing level of radio frequency interference (RFI) of the active services on the passive use of the spectrum. Advances in technology and computing have opened up new possibilities for mitigating the effects of certain classes of interference in the observing data. Interference in allocated bands always leads to data loss for the passive users of the spectrum even if interference mitigation is applied. However, interference mitigation in non-allocated spectral bands may facilitate the partial use of this spectrum for passive (non-interfering) observations. There is no generic method to mitigate all types of interference, so a multi-layered system approach may be advisable to reduce detrimental effects for a congested interference environment. Specific mitigation methods implemented at different points in the data acquisition chain will thus result in a cumulative mitigation effect on the data. This third RFI Mitigation Workshop considered RFI mitigation in radio astronomy in all its facets with the aim of facilitating the implementation of instrumental and data processing techniques. This workshop aimed to take a forward look at applications for the next generation of radio instruments, such as the SKA and its pathfinders and LOFAR, as well as considering their application to existing instruments. This workshop has been organized by ASTRON and NAIC, with support from the Engineering Forum of FP7 RadioNet, the SKA Project Development Office, and in collaboration with CRAF and IUCAF.
Introductions |
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RFI Mitigation in Radio Astronomy (invited)
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Spectrum Management and Radio Quiet Zones |
Passive spectrum use and upcoming changes in the spectrum environment (invited)
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Spectrum Management for Science in the 21st Century
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Spectrum measurement and Site Characterization |
External sources of RFI at the GMRT: methods for control and coexistence with commercial users
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The RFI Environment at Hat Creek Radio Observatory
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Radio Astronomy in Turkey: Site selection studies for radio quiet zones
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Assessment of RFI measurements for LOFAR
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RFI in Metsähovi Radio Observatory - measurements and effects
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RFI measurements at the WSRT
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The RFI monitoring systems for the Medicina and the Sardinia Radio Telescopes
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VHF-band RFI in Geographically Remote Areas
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New hints to mitigators from the latest RFI experiences
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RFI protection at the Shanghai Sheshan site
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RFI Mitigation and its challenges |
Overview of RFI mitigation methods in existing and new systems (invited)
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The impact of cognitive radio on radio astronomy
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Detection of RFI |
Statistics of the Spectral Kurtosis Estimator
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Hardware Implementation of an SK Spectrometer
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RFI mitigation at Nancay Observatory: Impulsive Signal Processing
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Techniques for excision RFI on RATAN-600 radio telescope in dm ranges
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The Murchison Widefield Array
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"Oktave" - Superwide-Band Technologies for the RATAN-600 Continuum Radiometers
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Fitering and Pre-Correlation Techniques |
Field Trials of a RFI adaptive filter for Pulsar Observations
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A turn-key Concept for active cancellation of Global Position System L3 Signal
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Space-Time Digital Filtering of Radio Astronomical Signals using 3-D Cone Filters
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The RFI Mitigations System at WSRT
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Spatial filtering using a multi-beam receiver
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Cyclostationarity for phased array
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Post-Correlation Techniques |
Software correlators as testbeds for RFI algorithms
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Post-correlation RFI detection
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RFI mitigation in AIPS, The new task UVRFI
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RFI Mitigation for the Parkes Galactic All-Sky Survey (GASS)
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RFI mitigation for the Effelsberg Bonn HI Survey (EBHIS)
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