Estimation of satellite antenna phase center offsets for Galileo

Satellite antenna phase center offsets for the GalileoInOrbitValidation(IOV) and FullOperationalCapability (FOC) satellites are estimated by two different analysiscenters based on tracking data of a global GNSS network. The mean x- and y-offsets could be determined with a precision of a few centimeters. However, daily estimates of thex-offsets of the IOV satellites show pronounced systematic effects with a peak-to-peak amplitude of up to 70 cm that depend on the orbit model and the elevation of the Sun above the orbital plane. For the IOV y-offsets, no dependence on the orbit model exists but the scatter strongly depends on the elevation of the Sun above the orbital plane. In general, these systematic effects are significantly smaller for the FOC satellites. The z-offsets of the two analysis centers agree within the 10–15 cm level, and the time series do not show systematic effects. The application of an averaged Galileo satellite antenna model obtained from the two solutions results in a reduction of orbit day boundary discontinuities by up to one third—even if an independent software package is used.

Le opere di Galileo Galilei.

Supplemento.

Opere di Galileo Galilei divise in quattro tomi.

"Prefazione universale", por Tommaso Buonaventuri: Tomo 1 pp. I-XLV. "Vita di Galileo Galilei", por Vincenzio Viviani: Tomo 1 pp. XLIX-IXXVI. "Dissertazione sovra il sistema del mondo degli antichi ebrei, del rev. padre d. Agostino Calmet": Tomo 4 pp.1-20

An introduction to the Italian languaje : containing specimens both of prose and verse, selectes from Francesco Redi, Galileo Galilei, [etc.] ... with a literal translation and grammatical notes, for the use of those who being already acquainted with grammar, attempt to learn it without a master /

Mode of access: Internet.

Dialogo di Galileo Galilei ... : doue ne i congressi di quattro giornate si discorre sopra i due massimi sistemi del mondo Tolemaico e Copernicano ...

Mode of access: Internet.

Le opere di Galileo Galilei.

Mode of access: Internet.

Per l'inaugurazione solenne della statua del Galileo ...

Mode of access: Internet.

Life of Galileo Galilei : with illustrations of the advancement of experimental philosophy.

"List of Galileo's works" : p. [1] (2nd group).

Lives of eminent persons, consisting of Galileo, Kepler, Newton, Mahomet, Wolsey, Sir E. Coke, Lord Somers, Caxton, Blake, Adam Smith, Niebuhr, Sir C. Wren, and Michael Angelo.

The "Life of Sir Isaac Newton" is substantially a translation from that in the "Biographie universelle", by M. Biot. cf. note at head of article.

Dise?o de un libro de comics para la ense?anza del movimiento uniforme y el movimiento naturalmente acelerado propuesto por Galileo

Se reconoce que el mecanicismo y la rigidez con la cual se est? ense?ando la f?sica en las escuelas, el cual deja un aprendizaje tan solo de f?rmulas y no de relaciones cualitativas. Para esto se considera el dise?o de un c?mic como material que brinda enormes posibilidades para la ense?anza y el aprendizaje de las ciencias y de la f?sica en particular. Se plantea dise?ar una propuesta para la ense?anza del movimiento uniforme y movimiento natural acelerado a trav?s de un comic y para esto se realizara la revisi?n de la tercera jornada del libro ?Dialogo Entre Dos Nuevas Ciencias? en donde se tratan los teoremas y axiomas del movimiento uniforme y el movimiento natural acelerado de una manera cualitativa y dialogada a trav?s de unos interlocutores.