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Data analysis activities of the RMKI Virgo Group

Noise and Wiener filter studies

In case when the detector noise is not perfectly white, the optimal matched filtering is not realized by simply taking the cross-correlation of the signal pattern and the measured time series, but by correctly implementing the Wiener filter, depending also on the actual time series. We investigate the gain in signal to noise ratio when implementing the Wiener filter correctly. Our preferred approach is based on performing the Wiener filtering in time domain, using unbiased statistical estimators of the necessary correlation functions, and on the Neumann series expansion for deconvolution (for this, see J.Phys. A39 (2006) 13621). (Andras Laszlo)

Calculating spinning eccentric GW templates

(Matyas Vasuth, Peter Csizmadia)

Implementing new templates, efficiency test

The calculated new waveforms are transformed into ninja format and are injected into the detector signal. We use the already existing template banks to see with what efficiency the new injections are discovered with the old non-spinning, circular waveforms. (Gergely Debreczeni)


The RMKI Budapest Virgo Group
-- GergelyDebreczeni - 19 Nov 2008
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Topic revision: r6 - 2009-09-08 - AndrasLaszlo
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