By a News Reporter-Staff News Editor at Defense & Aerospace Week -- A new study on Signal Processing is now available. According to news reporting originating from Valbonne, France, by VerticalNews correspondents, research stated, "The MICROSCOPE space mission aims at testing the Equivalence Principle (EP) with an accuracy of 10(-15). The test is based on the precise measurement delivered by a differential electrostatic accelerometer on-board a drag-free microsatellite which includes two cylindrical test masses submitted to the same gravitational field and made of different materials."
Our news editors obtained a quote from the research from the University of Nice Sophia-Antipolis, "The experiment consists in testing the equality of the electrostatic acceleration applied to the masses to maintain them relatively motionless at a well-known frequency. This high precision experiment is compatible with only very little perturbations. However, aliasing arises from the finite time span of the measurement, and is amplified by measurement losses. These effects perturb the measurement analysis. Numerical simulations have been run to estimate the contribution of a perturbation at any frequency on the EP violation frequency and to test its compatibility with the mission specifications."
According to the news editors, the research concluded: "Moreover, different data analysis procedures have been considered to select the one minimizing these effects taking into account the uncertainty about the frequencies of the implicated signals."
For more information on this research see: Determination of the Equivalence Principle Violation Signal for the MICROSCOPE Space Mission: Optimization of the Signal Processing. Space Science Reviews, 2013;180(1-4):177-191. Space Science Reviews can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Space Science Reviews - www.springerlink.com/content/0038-6308/)
The news editors report that additional information may be obtained by contacting E. Hardy, Univ Nice Sophia Antipolis, Observ Cote Azur, CNRS, UMR 7329, F-06560 Valbonne, France. Additional authors for this research include A. Levy, G. Metris, M. Rodrigues and P. Touboul.
Keywords for this news article include: France, Europe, Valbonne, Aerospace, Electronics, Signal Processing
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