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O noua generatie de sateliti

Iridium Satellite LLC, compaia care a salvat reteaua spatiala a Motorola de faliment, planuieste sa creeze o noua generatie de sateliti care sa monitorizeze in permanenta mediul si sa fotografieze Pamantul.Iridium a fost lansat in 1998 ca un serviciu de telefonie cu acoperire mondiala, indreptat catre clientii din clasa bussines. Preturile mari si terminalele masive au limitat succesul proiectului. Din 2000, compania a avut mai mult succes comercializand sisteme de comunicatii de date catre guvern, industria navala si aviatie.In cadrul evenimentului "Satellite 2007", care va avea loc la Washington, D.C, va fi lansata initiativa denumita Iridium Next, care va urmari construirea unei retele de noua generatie constituita dintr-o "constelatie" de sateliti. In urmatorii doi ani se vor analiza tehnologii si se vor incheia parteneriate pentru realizarea proiectului estimat la peste 2 miliarde de dolari. Acesta va deveni operational in 2016. Serviciile oferite includ monitorizarea mediului, fotografierea acestuia si un sistem de pozitionare globala complementar GPS-ului actual, a specificat Matt Desch, presedintele Iridium.GPS consta din 66 de sateliti care formeaza o retea de tip mesh. Ofera o latime de banda de doar 2.4Kbps si suporta apeluri de voce. Viitoarea generatie va putea oferi viteze de transmisie a datelor de pana la 10mbps. Sistemul de pozitionare va avea o precizie de ordinul zecilor de centimetri.Noul sistem va fi bazat in intregime pe protocolul Internet (IP), facilitand implementarea noilor descoperiri tehnologice si integrarea serviciilor in aplicatiile companiilor.Iridium Next va inlocui treptat generatia acutala de sateliti care va iesi din serviciu incepand cu 2014.
Sursa: IDG
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