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Radio Frequency Interference (RFI) from anthropogenic radio sources poses significant challenges to current and future radio telescopes. Contemporary approaches to detecting RFI treat the task as a semantic segmentation problem on radio…

Neural and Evolutionary Computing · Computer Science 2026-01-23 Nicholas J Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

Radio frequency fingerprint identification (RFFI) is an emerging device authentication technique, which exploits the hardware characteristics of the RF front-end as device identifiers. RFFI is implemented in the wireless receiver and acts…

Signal Processing · Electrical Eng. & Systems 2022-07-08 Guanxiong Shen , Junqing Zhang , Alan Marshall , Roger Woods , Joseph Cavallaro , Liquan Chen

For transient sources with timescales of 1-100 seconds, standardized imaging for all observations at each time step become impossible as large modern interferometers produce significantly large data volumes in this observation time frame.…

Instrumentation and Methods for Astrophysics · Physics 2022-04-06 Xia Zhang , Foivos I. Diakogiannis , Richard Dodson , Andreas Wicenec

Noise of non-astrophysical origin will contaminate science data taken by the Advanced Laser Interferometer Gravitational-wave Observatory (aLIGO) and Advanced Virgo gravitational-wave detectors. Prompt characterization of instrumental and…

Instrumentation and Methods for Astrophysics · Physics 2015-10-21 Jade Powell , Daniele Trifiro , Elena Cuoco , Ik Siong Heng , Marco Cavaglia

Contemporary real-time RFI mitigation is carried out at different stages primarily using regulatory and technical approaches. Regulatory approaches include spectrum management, radio quiet zones, and ensuring protection from self-generated…

Instrumentation and Methods for Astrophysics · Physics 2025-01-08 Kaushal D. Buch , Ruta Kale , Kishor D. Naik , Ajithkumar B. , Thushara Gunaratne , N. Habana , Gregory Hellbourg , Jane Kaczmarek , L. Petrov , Cedric Viou , Benjamin Winkel

Increasing levels of Radio Frequency Interference (RFI) are a problem for research in radio astronomy. Various techniques to suppress RFI and extract astronomical signals from data affected by interference are being tried out. However,…

Astrophysics · Physics 2007-05-23 K. Jeeva Priya , D. Anish Roshi

Upcoming surveys with new radio observatories such as the Square Kilometer Array will generate a wealth of imaging data containing large numbers of radio galaxies. Different classes of radio galaxies can be used as tracers of the cosmic…

Astrophysics of Galaxies · Physics 2018-07-30 Wathela Alhassan , A. R. Taylor , Mattia Vaccari

The sensitivity of radio telescopes is becoming increasingly limited by the presence of radio frequency interference (RFI), which will worsen as the radio spectrum becomes more crowded. One context where this poses a challenge is the field…

The rapid development of new generation radio interferometers such as the Square Kilometer Array (SKA) has opened up unprecedented opportunities for astronomical research. However, anthropogenic Radio Frequency Interference (RFI) from…

Instrumentation and Methods for Astrophysics · Physics 2022-03-02 Haomin Sun , Hui Deng , Feng Wang , Ying Mei , Tingting Xu , Oleg Smirnov , Linhua Deng , Shoulin Wei

We present a filtering technique that can be applied to individual baselines of wide-bandwidth, wide-field interferometric data to geometrically select regions on the celestial sphere that contain primary calibration sources. The technique…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 Aaron R. Parsons , Donald C. Backer

Neural network (NN) based methods are applied to the detection of radio frequency interference (RFI) in post-correlation,post-calibration time/frequency data. While calibration doesaffect RFI for the sake of this work a reduced dataset…

Instrumentation and Methods for Astrophysics · Physics 2020-07-31 Kyle Harrison , Amit Kumar Mishra

Future wireless networks and sensing systems will benefit from access to large chunks of spectrum above 100 GHz, to achieve terabit-per-second data rates in 6th Generation (6G) cellular systems and improve accuracy and reach of Earth…

Signal Processing · Electrical Eng. & Systems 2024-02-14 Paolo Testolina , Michele Polese , Josep M. Jornet , Tommaso Melodia , Michele Zorzi

Passive space-borne radiometers operating in the 1400-1427 MHz protected frequency band face radio frequency interference (RFI) from terrestrial sources. With the growth of wireless devices and the appearance of new technologies, the…

Machine Learning · Computer Science 2023-04-27 Ali Owfi , Fatemeh Afghah

We present a project to implement a national common strategy for the mitigation of the steadily deteriorating Radio Frequency Interference (RFI) situation at the Italian radio telescopes. The project involves the Medicina, Noto, and…

Radio interferometry calibration and Radio Frequency Interference (RFI) removal are usually done separately. Here we show that jointly modelling the antenna gains and RFI has significant benefits when the RFI follows precise trajectories,…

Instrumentation and Methods for Astrophysics · Physics 2025-02-19 Chris Finlay , Bruce A. Bassett , Martin Kunz , Nadeem Oozeer

Aims: This paper discusses the spectral occupancy for performing radio astronomy with the Low-Frequency Array (LOFAR), with a focus on imaging observations. Methods: We have analysed the radio-frequency interference (RFI) situation in two…

We present the first survey of radio frequency interference (RFI) at the future site of the low frequency Square Kilometre Array (SKA), the Murchison Radio-astronomy Observatory (MRO), that both temporally and spatially resolves the RFI.…

Instrumentation and Methods for Astrophysics · Physics 2020-09-30 Steven Tingay , Marcin Sokolowski , Randall Wayth , Daniel Ung

Because of the denser active use of the spectrum, and because of radio telescopes higher sensitivity, radio frequency interference (RFI) mitigation has become a sensitive topic for current and future radio telescope designs. Even if quite…

Instrumentation and Methods for Astrophysics · Physics 2017-03-03 Dumez-Viou Cédric , Weber Rodolphe , Ravier Philippe

Radio Frequency Interference (RFI) is unwanted noise that swamps the desired astronomical signal. Radio astronomers have always had to deal with RFI detection and excision around telescope sites, but little has been done to understand the…

Instrumentation and Methods for Astrophysics · Physics 2022-11-17 Isaac Sihlangu , Nadeem Oozeer , Bruce Bassett

We investigate the relation between the radio (F_r) and optical (F_o) flux densities of a variety of classes of radio transients and variables, with the aim of analysing whether this information can be used, in the future, to classify such…

High Energy Astrophysical Phenomena · Physics 2018-07-11 A. J. Stewart , T. Muñoz-Darias , R. P. Fender , M. Pietka
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