Article,

Parabolic Drag-Free Flight, Actuation with Kicks, Spectral Analysis with Gaps

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Space Science Reviews, 151 (1): 183--196 (Mar 1, 2010)
DOI: 10.1007/s11214-009-9598-2

Abstract

The LISA Pathfinder Drift Mode is an experimental mode proposed for the LISA Pathfinder drag free space mission. The Drift Mode's specificity is to switch off a possibly noisy actuator periodically in order to minimize the actuation noise. The experiment delivers a measurement that includes data segments virtually free of any actuation force noise. The corresponding acceleration data is then used to estimate the experiment disturbance spectrum, using a calibrating and gap-filling algorithm.

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