Detection and blanking of GSM interference in radio-astronomical observations
- 20 January 2003
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Radio-astronomical observations are increasingly disturbed by man-made communication signals, satellite and broad- cast services. In particular, the GSM band is a highly satu- rated domain, full with interferers which are much stronger than radio astronomical signals. In this paper we propose a strategy to reduce this interference using its non-stationary nature. We describe a multichannel interference detector which enables us to reduce the interference by rejecting cor- rupted time-frequency slots. The use of multichannel de- tection greatly improves performance over previously sug- gested single channel detectors. This paper is the firstto pro- pose the implementation of advanced array signal processing methods for interference detection in radio astronomical ob- servations.Keywords
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