RFI mitigation methods in radio astronomy

  title={RFI mitigation methods in radio astronomy},
  author={Peter Fridman and Willem A. Baan},
  journal={Astronomy and Astrophysics},
Various methods of radio frequency interference (RFI) mitigation methods at radio astronomy tele- scopes are being considered. Special attention is given to real-time processing algorithms. Computer simulations and observational results are used to describe the applicability of these methods. Best results can be achieved when the RFI mitigation procedures are adapted to the particular radio telescope, the type of observations, and the peculiarities of the RFI environment. A combination of… 
RFI mitigation techniques in radio astronomy
  • J. Ford, K. Buch
  • Physics, Computer Science
    2014 IEEE Geoscience and Remote Sensing Symposium
  • 2014
Examination of regulatory and management efforts as well as technological approaches employed in mitigating radio frequency interference in radio astronomy observations are examined.
Implementing RFI Mitigation in Radio Science
  • W. Baan
  • Computer Science
    Journal of Astronomical Instrumentation
  • 2019
An overview of methods for mitigating radio frequency interference in radio science data is presented, which range from proactive methods to changing the local RFI environment by means of regulatory manners, to pre- and post-detection methods, to various pre-processing methods, and to methods applied at or post-processing.
Radio Frequency Interference Mitigation at the Westerbork Synthesis Radio Telescope: Algorithms, Test Observations, and System Implementation
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
RFI Mitigation Researches and Implements in Radio Astronomy
Increasing Radio Frequency Interference (RFI) is a serious problem for researches in modern radio astronomy. Various techniques to excise RFI from signals data are being tried out. In this paper,
RFI mitigation with the time-frequency robust statistical analysis
Time-frequency analysis with high temporal and frequency resolution allows us to detect and excise RFI better than can be done with existing standard radiotelescope backends.
Overview of technical approaches to radio frequency interference mitigation
An interface between lines of thought on radio frequency interference (RFI) mitigation in the fields of radio astronomy and signal processing is provided to explore the commonality of different approaches to help researchers in both fields interpret each other's concepts and jargon.
RFI mitigation of GNSS signals for radio astronomy: problems and current techniques
A brief overview of state-of-the-art RFI mitigation techniques for radio astronomy is given and the principles and results pertaining to some methods that seem particularly appropriate to mitigate RFI arising from GNSS signals are presented.
Overview of Technical Approaches to RFI Mitigation
This overview provides an interface between lines of thought on rfi mitigation in the fields of radio astronomy and signal processing. The goal is to explore the commonality of different approaches
Only a small fraction of the radio spectrum can be reserved exclusively for passive scientific measurements, so radio astronomers must expect to observe some natural radiation at frequencies
Spatial filtering of RF interference in radio astronomy
A spatial filtering algorithm based on the estimation of the spatial signature vector of the interferer from shortterm spatial covariance matrices followed by a subspace projection to remove that dimension from the covariance matrix, and by further averaging.


RFI excision using a higher order statistics analysis of the power spectrum
A method of radio frequency interference (RFI) suppression in radio astronomy spectral observations based on the analysis of the probability distribution of an instantaneous spectrum is described.
Radio-astronomical observations are increasingly corrupted by radio frequency interference, and on-line detection and filtering algorithms are becoming essential. To facilitate the introduction of
A New Approach to Interference Excision in Radio Astronomy: Real-Time Adaptive Cancellation
Every year, an increasing amount of radio-frequency (RF) spectrum in the VHF, UHF, and microwave bands is being utilized to support new commercial and military ventures, and all have the potential to
Removing Radio Interference from Contaminated Astronomical Spectra Using an Independent Reference Signal and Closure Relations
The growing level of radio frequency interference (RFI) is a recognized problem for research in radio astronomy. This paper describes an intuitive but powerful RFI cancellation technique that is
The response of a radio-astronomy synthesis array to interfering signals
Multiplying interferometers, and the more complex synthesis arrays that have been developed from them, possess the advantage of greater discrimination against interfering signals than can be obtained
Cancellation of GLONASS signals from radio astronomy data
It is demonstrated that GLONASS narrow band signals may be removed using digital signal processing in a manner that is robust and non-toxic to the weak astronomy signals, without using a reference antenna.
Concept design for a low-frequency array
  • J. Bregman
  • Engineering, Computer Science
    Astronomical Telescopes and Instrumentation
  • 2000
A scaleable configuration is presented for an aperture synthesis array operating in the frequency range from the ionospheric cut off at about 10 MHz to about 160 MHz where existing telescopes are confusion limited.
Statistical-Physical Models of Urban Radio-Noise Environments - Part I: Foundations
Theoretical foundations for an analytical model of urban radio-noise environments are presented at a level of generality broad enough to include the pertinent physical and statistical elements which
Active adaptive antennas for radio astronomy: results from the R&D program on the Square Kilometer Array
Various unique concepts are studied for the Square Kilometer Array expected to be operational between 2010 and 2015. We compare telescopes in operation today with the SKA requirements and among these
Statistical-Physical Models of Electromagnetic Interference
  • D. Middleton
  • Mathematics, Computer Science
    IEEE Transactions on Electromagnetic Compatibility
  • 1977
This study is devoted to the development of analytically tractable, experimentally verifiable, statistical-physical models of man-made and natural electromagnetic interference, whose degrading effects on system performance can be severe.