Space Integrated GPS/INS (SIGI)
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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.
[edit] See also
- SIGI - Honeywell Aerospace
- Relative Navigation and Attitude Determination Near the International Space Station
- Miniature Inertial Measurement Unit (MIMU)
- Air navigation
- Spherical trigonometry
[edit] Notes and references
- ^ "Lessons Leamed from Two Years of On-Orbit Global Positioning System Experience on International Space Station". PDF. NASA Johnson Space Center. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060020237_2006014558.pdf. Retrieved on 2006-09-27.
- ^ "H-IIA Transfer Vehicle". Web Site. Japan Aerospace Exploration Agency (JAXA). http://www.jaxa.jp/missions/projects/rockets/htv/backnumber_e.html. Retrieved on 2006-10-01.
- ^ "Independent Assessment of X-37 Safety & Mission Assurance Processes and Design Features". PDF. NASA Headquarters Office of Safety & Mission Assurance. http://pbma.nasa.gov/docs/public/pbma/casestudies/X37_Independent_Assessment_Report.pdf. Retrieved on 2006-09-27.
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