Space Integrated GPS/INS
From Infogalactic: the planetary knowledge core
Space Integrated GPS/INS (SIGI) is a strapdown Inertial Navigation Unit (INU) developed and built by Honeywell International to control and stabilize spacecraft during missions. It has integrated global positioning/inertial navigation to provide three navigation solutions: Pure inertial, GPS-only and blended GPS/INS. SIGI have been employed on the International Space Station,[1] the Japanese H-II Transfer Vehicle (HTV)[2] the Boeing X-37[3] and X-40.
SIGI is also proposed as the primary navigation system for Orion, which is scheduled to replace the Space Shuttle.[needs update]
See also
References
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