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Chapitre D'ouvrage Année : 2010

RFI mitigation at Nanc¸ay Observatory: Impulsive Signal Processing

Résumé

Radio astronomy has protected frequency bands for free observations. However, it is often necessary to observe outside of those sanctuaries. For example, it is the case for HI radio-sources with high red-shifts that are observed into radarallocated frequency bands. A radar pulse blanker based on statistical analysis has been implemented in a FPGA. Several tricks has made the implementation possible at a low hardware cost. Pulsar is another kind of impulsive signal which needs specific processing. In the proposed approach, the cyclostationarity is used to discriminate between radio-frequency interference (RFI) pulses and pulsar pulses.
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Dates et versions

hal-00647492 , version 1 (02-12-2011)

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  • HAL Id : hal-00647492 , version 1

Citer

Dalal Ait-Allal, Cedric Dumez-Viou, Rodolphe Weber, Grégory Desvignes, Ismaël Cognard, et al.. RFI mitigation at Nanc¸ay Observatory: Impulsive Signal Processing. S. A. Torchinsky, A. van Ardenne, T. van den Brink-Havinga, A. van Es, A.J. Faulkner. Widefield Science and Technology for the SKA SKADS Conference 2009, ISBN 978-90-805434-5-4, pp.201 - 205, 2010. ⟨hal-00647492⟩
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