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Abstract: Radio frequency interference RFI already limits the sensitivity of existingradio telescopes in several frequency bands and may prove to be an even greaterobstacle for future generation instruments to overcome. I aim to create astructure of radio astronomy correlators which will be statistically stablerobust in the presence of interference. A statistical analysis of the mixtureof system noise + signal noise + RFI is proposed here which could beincorporated into the block diagram of a correlator. Order and rank statisticsare especially useful when calculated in both temporal and frequency domains.Several new algorithms of robust correlators are proposed and investigatedhere. Computer simulations and processing of real data demonstrate the efficacyof the proposed algorithms.



Autor: P. A. Fridman

Fuente: https://arxiv.org/







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