FLORES TRIVIGNO Matias Gaston
congresos y reuniones científicas
Contribución de la Estación San Juan SLR al Sistema Galileo
RICARDO PODESTA; ELOY ACTIS; ESTER ALONSO; ANA MARIA PACHECO; A. GONZALEZ; YANBEN HAN; TANQIANG WANG; LIMIN ZHAO; CHENGZHI LIU; J. ALACORIA; LEANDRO PEÑALOZA; DIEGO BRIZUELA; MATÍAS FLORES
Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2008
The new San Juan Satellite Laser Ranging Station integrates, with number 7406, the International Laser Ranging Service (ILRS) network, being one of the few stations located in the southern hemisphere. It works shooting powerful laser pulses towards satellites at different heights, measuring the time of flight and calculating distances. With this technology we can perform high precision astronomical, geophysical and geodesic studies. Within the full constellation of satellites observed with ILRS, we track the two European pioneer satellites (Giove-A and B) of the future Global Positioning System Galileo, the European competitive response to the currently well established American GPS, of worldwide use. The GPS Galileo will be aimed mostly to civil usage, especially to aerial and terrestrial navigation. TheGiove-A satellite was launched out to space on December 28, 2005 from the Baikonur Cosmodrome, on board of the Russian Soyuz rocket. Since mid 2006, 14 Laser Stations -San Juan station included- took part in a follow-up campaign of the Giove-A. Once the satellite orbital behavior was known, a second Giove-B orbiter was launched in April 2008. A constellation of 30 satellites will complete the Galileo system. Since Giove-A orbits the Earth at a height of 23916 kms, only shots from the best SLR world stations can reach it. San Juan station has tracked it, contributing to the study of its motion. As a new station, the San Juan Satellite Laser Ranging Telescope has become one of the best in the world, consequence of a decade of successful Chinese-Argentinean collaboration.