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Nasa's Laser Moon Mission To Boost Space Communication Washington: Nasa has completed its 30-day lunar laser mission which confirmed that the possibility of expanding broadband capabilities in space using laser communications is as bright as expected. Hosted aboard the Lunar Atmosphere and Dust Environment Explorer (LADEE), for its ride to lunar orbit, the Lunar Laser Communication Demonstration (LLCD) mission was designed to confirm laser communication capabilities from a distance of almost a quarter-of-a-million miles, Nasa said. In addition to demonstrating record-breaking data download and upload speeds to the Moon at 622 megabits per second (Mbps) and 20 Mbps, respectively, LLCD also showed that it could operate as well as any Nasa radio system. "Throughout our testing we did not see anything that would prevent the operational use of this technology in the immediate future," said Don Cornwell, LLCD mission manager at NASA's Goddard Space Flight Center in Greenbelt. For example, LLCD demonstrated error-free communications during broad daylight, including operating when the moon was to within three degrees of the Sun as seen from Earth. LLCD also demonstrated error-free communications when the Moon was low on the horizon, less than 4 degrees, as seen from the ground station, which also demonstrated that wind and atmospheric turbulence did not significantly impact the system. LLCD was even able to communicate through thin clouds, an unexpected bonus. Also Read: Crime Against Women: Courts Act Tough In 2013 India's Top 10 Politicos Who Hogged Major Limelight in 2013 Source: PTI Post your Comment All form fields are required.
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- Objavljeno 24. 10. 2013. - Kategorije - Tagovi - Denis Jeleć NASA uspostavila vezu s Mjesecom pri 622Mbps NASA-in Lunar Laser Communication Demonstration (LLCD) je korištenjem pulsne laserske zrake uspješno probio rekord u prijenosu podataka od 622 megabita u sekundi na udaljenosti većoj od 384 tisuće kilometara. U pitanju je veza čak šest puta brža nego li je bilo moguće ostvariti radijskom komunikacijom s Mjeseca. LLCD je agenciji zapravo prvi sustav za dvosmjernu komunikaciju koji koristi laser a ne radio-valove. Lunar Atmosphere and Dust Environment Explorer (LADEE) koji orbitira oko mjesečevog ekvatora (i koji sadrži LLCD sustav) uspješno je i primao podatke sa zemlje pri 20Mbps. “LLCD je prvi korak u našim planovima prema izradi sljedeće generacije sustava za svemirsku komunikaciju”, rekao je NASA-in Badri Younes, zamjenik administratora za svemirsku komunikaciju i navigaciju (SCaN) u Washingtonu. “Ohrabreni smo rezultatima do sada i uvjereni u to da smo na pravom putu za skoro uvođenje ovog sustava u operativnu službu.” NASA se praktički od svojih prvih putovanja u svemir oslanjala na radijsku komunikaciju, no ista dolazi do određenih granica kada je u pitanju potreba za prijenosom više podataka. Kako agencija napominje, razvoj i uvođenje laserskih optičkih sustava će drastično proširiti mogućnosti i prijenos fotografija veće razlučivosti – pa čak i prijenos 3D videa. Izvor: NASA Fotografija: NASA