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- W2016356945 abstract "Interferometric gravitational wave detectors operate by sensing the differential light travel time between free test masses. Correspondingly, they are sensitive to anything that changes the physical distance between the test masses, including physical motion of the masses themselves. In ground-based detectors the test masses are suspended as pendula and, consequently, thermal or other excitations of the suspension wires' violin modes lead to a strong, albeit narrow-band, ``signal'' in the detector wave-band that can confound attempts to observe gravitational waves. Here we describe the design of a Kalman filter that determines the time-dependent vibrational state of a detector's suspension ``violin'' modes from the detector output. From the estimated state we can predict that component of the detector output due to suspension excitations, thermal or otherwise, and subtractively remove those disturbances from the detector output. We demonstrate the filter's effectiveness both through numerical simulations and application to real data taken on the LIGO 40 M prototype detector." @default.
- W2016356945 created "2016-06-24" @default.
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- W2016356945 date "2003-05-27" @default.
- W2016356945 modified "2023-10-12" @default.
- W2016356945 title "Erratum: Data conditioning for gravitational wave detectors: A Kalman filter for regressing suspension violin modes [Phys. Rev. D63, 062004 (2001)]" @default.
- W2016356945 doi "https://doi.org/10.1103/physrevd.67.109902" @default.
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