Excising terrestrial radio interference in low frequency radio astronomy
About:
This article is published in Monthly Notices of the Royal Astronomical Society.The article was published on 1982-06-01 and is currently open access. It has received 6 citations till now. The article focuses on the topics: Frequency offset & Maximum usable frequency.read more
Citations
More filters
Journal ArticleDOI
Multichannel interference mitigation techniques in radio astronomy
TL;DR: In this paper, interference detection by rank estimation of short-term covariance matrices and spatial filtering by subspace estimation and projection are discussed. And the authors discuss experimental data collected at the Westerbork Synthesis Radio Telescope and illustrate the effectiveness of the spacetime detection and blanking process on the recovery of a 3C 48 absorption line in the presence of mobile telephony interference.
Journal ArticleDOI
Radio-astronomical imaging in the presence of strong radio interference
Amir Leshem,A. van Veen +1 more
TL;DR: This work reformulates the imaging process as a sequential estimation of the locations of astronomical sources and develops an extended CLEAN algorithm, which allows the insertion of other array signal processing techniques for direction finding and gives estimates of the expected image quality and the amount of interference suppression that can be achieved.
Radio frequency interference mitigation in radio astronomy
TL;DR: In this paper, modern array signal processing techniques have been applied to narrow-band multichannel interference detection and excision, and to narrowband spatial interference filtering, in order to mitigate interference in radio astronomical data, filtering techniques can be used.
Journal ArticleDOI
Radio astronomical imaging in the presence of strong radio interference
TL;DR: In this article, the authors study the effect of spatial filtering techniques on radio astronomical imaging and derive a maximum likelihood procedure for the imaging and an approximate ML image formation technique to overcome the computational burden involved.
Introduction to Interference Mitigation Techniques in Radio Astronomy
TL;DR: In this article, the authors formulate the radio astronomy problem in an array signal processing language, and give an introduction to some elementary algorithms from that field, including interference detection by rank estimation of short-term covariance matrices, and spatial filtering by subspace estimation and projection.