Matched filter for multi-transducers resonant GW antennas

Abstract

We analyze two kinds of matched filters for data output of a spherical resonant GW detector. In order to filter the data of a real sphere, a strategy is proposed, firstly using an omnidirectional in-line filter, which is supposed to select periodograms with excitations, secondly by performing a directional filter on such selected periodograms, finding the wave arrival time, direction and polarization. We point out that, as the analytical simplifications occurring in the ideal 6 transducers TIGA sphere do not hold for a real sphere, using a 5 transducers configuration could be a more convenient choice.

15 pages and 4 figures, version accepted for publication in PRD

References in corpus (4)

• The TIGA technique for detecting gravitational waves with a spherical antenna
• Solution to the inverse problem for a noisy spherical gravitational wave antenna
• Gravitational wave detection by a spherical antenna: the angular sensitivity of resonators in the TIGA configuration and its variation with sidereal time and galactic longitude
• Spherical gravitational wave detectors: An approach for real time data analysis

Cited by in corpus (5)

• Sensitivity of the spherical gravitational wave detector MiniGRAIL operating at 5 K
• Coherent detection method of gravitational wave bursts for spherical antennas
• Events trigger generator for resonant spherical detectors of gravitational waves
• Multichannel matched filtering for spherical gravitational wave antennas
• On the Sensitivity of a Hollow Sphere as a Multi-modal Resonant Gravitational Wave Detector