Radio frequency detection and mitigation for LOFAR telescope system

Le résumé fourni par la source

Radio frequency interference detection and mitigation for radio astronomy are bottleneck problems. Telescopes are becoming more sensitive therefore thresholds for detecting unwanted signals are becoming lower and telescopes have to deal with a big number of interference sources. When an unwanted signal is detected for radio astronomers it is quite important to know the probability of false alarm Pfa with which signal was detected and to set thresholds with desired Pfa level. LOFAR (LOw Frequency ARray) of radiotelescopes is located in the Netherlands and in other European countries. In the case of LOFAR telescope we look at a detector based on eigenvalue test of covariance matrices. The simple threshold for this test was derived in the work of Edelman. Currently there is no suitable solution that can allow to set this threshold with desired Pfa level. The aim of this thesis is to derive the empirical solution in order to detect a signal with a desired Pfa and to test it at a real LOFAR dataset.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.