RFI mitigation at Nanc¸ay Observatory: Impulsive Signal ProcessingReportar como inadecuado




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1 station de radioastronomie de Nançay USN - Unité Scientifique de la Station de Nançay 2 USN - Unité Scientifique de la Station de Nançay 3 IRAUS PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique 4 LPCE - Laboratoire de physique et chimie de l-environnement

Abstract : 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.

keyword : RFI mitigation pulsar impulsive signal detector





Autor: Dalal Ait-Allal - Cedric Dumez-Viou - Rodolphe Weber - Grégory Desvignes - Ismaël Cognard - Gilles Theureau -

Fuente: https://hal.archives-ouvertes.fr/



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