Absolute gravity measurements are based on the reconstruction of the free-falling motion of a test body in vacuum. Several works concerning influence phenomena are available in literature and can be used in evaluating the measurement uncertainty. The statistical analysis of series of observations is useful to evaluate some components of this uncertainty but the remaining ones must be derived from a priori probability distributions of the unknown parameters affecting the result. In this paper the propagation of the probability distributions using a Monte Carlo method is showed to be a powerful tool to estimate the effect of two non-gravitational accelerations introduced by translations and rotations of the flying object: the Coriolis and centripetal acceleration. We discuss the analysis applied to the IMGC-02 absolute gravimeter.
Perturbations in absolute gravimetry: a quantitative estimate of some of the most overriding influence factors / D'Agostino, Giancarlo; Germak, ALESSANDRO FRANCO LIDIA; Origlia, C; Quagliotti, D.. - (2008), pp. 117-122. (Intervento presentato al convegno International symposium on terrestrial gravimetry: static and mobile measurements tenutosi a St. Petersburg, Russia nel 20-22 August 2007).
Perturbations in absolute gravimetry: a quantitative estimate of some of the most overriding influence factors
D'AGOSTINO, GIANCARLO;GERMAK, ALESSANDRO FRANCO LIDIA;ORIGLIA C;
2008
Abstract
Absolute gravity measurements are based on the reconstruction of the free-falling motion of a test body in vacuum. Several works concerning influence phenomena are available in literature and can be used in evaluating the measurement uncertainty. The statistical analysis of series of observations is useful to evaluate some components of this uncertainty but the remaining ones must be derived from a priori probability distributions of the unknown parameters affecting the result. In this paper the propagation of the probability distributions using a Monte Carlo method is showed to be a powerful tool to estimate the effect of two non-gravitational accelerations introduced by translations and rotations of the flying object: the Coriolis and centripetal acceleration. We discuss the analysis applied to the IMGC-02 absolute gravimeter.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
