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 |
RFI Mitigation in Radio Astronomy (invited) PoS(RFI2010)001 pdf |
Spectrum Management and Radio Quiet Zones |
Passive spectrum use and upcoming changes in the spectrum environment (invited) PoS(RFI2010)002 pdf |
Spectrum Management for Science in the 21st Century PoS(RFI2010)010 pdf |
Spectrum measurement and Site Characterization |
External sources of RFI at the GMRT: methods for control and coexistence with commercial users PoS(RFI2010)003 pdf |
The RFI Environment at Hat Creek Radio Observatory PoS(RFI2010)004 pdf |
Radio Astronomy in Turkey: Site selection studies for radio quiet zones PoS(RFI2010)005 pdf |
Assessment of RFI measurements for LOFAR PoS(RFI2010)006 pdf |
RFI in Metsähovi Radio Observatory - measurements and effects PoS(RFI2010)027 pdf |
RFI measurements at the WSRT PoS(RFI2010)028 pdf |
The RFI monitoring systems for the Medicina and the Sardinia Radio Telescopes PoS(RFI2010)029 pdf |
VHF-band RFI in Geographically Remote Areas PoS(RFI2010)030 pdf |
New hints to mitigators from the latest RFI experiences PoS(RFI2010)017 pdf |
RFI protection at the Shanghai Sheshan site PoS(RFI2010)041 pdf |
RFI Mitigation and its challenges |
Overview of RFI mitigation methods in existing and new systems (invited) PoS(RFI2010)007 pdf |
The impact of cognitive radio on radio astronomy PoS(RFI2010)009 pdf |
Detection of RFI |
Statistics of the Spectral Kurtosis Estimator PoS(RFI2010)019 pdf |
Hardware Implementation of an SK Spectrometer PoS(RFI2010)020 pdf |
RFI mitigation at Nancay Observatory: Impulsive Signal Processing PoS(RFI2010)021 pdf |
Techniques for excision RFI on RATAN-600 radio telescope in dm ranges PoS(RFI2010)022 pdf |
The Murchison Widefield Array PoS(RFI2010)016 pdf |
"Oktave" - Superwide-Band Technologies for the RATAN-600 Continuum Radiometers PoS(RFI2010)018 pdf |
Fitering and Pre-Correlation Techniques |
Field Trials of a RFI adaptive filter for Pulsar Observations PoS(RFI2010)023 pdf |
A turn-key Concept for active cancellation of Global Position System L3 Signal PoS(RFI2010)025 pdf |
Space-Time Digital Filtering of Radio Astronomical Signals using 3-D Cone Filters PoS(RFI2010)026 pdf |
The RFI Mitigations System at WSRT PoS(RFI2010)024 pdf |
Spatial filtering using a multi-beam receiver PoS(RFI2010)032 pdf |
Cyclostationarity for phased array PoS(RFI2010)033 pdf |
Post-Correlation Techniques |
Software correlators as testbeds for RFI algorithms PoS(RFI2010)035 pdf attachments |
Post-correlation RFI detection PoS(RFI2010)036 pdf |
RFI mitigation in AIPS, The new task UVRFI PoS(RFI2010)037 pdf |
RFI Mitigation for the Parkes Galactic All-Sky Survey (GASS) PoS(RFI2010)038 pdf |
RFI mitigation for the Effelsberg Bonn HI Survey (EBHIS) PoS(RFI2010)042 pdf |