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Autonomous Navigation of the SSTI/Lewis Spacecraft Using the Global Positioning System (GPS)The National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC) Flight Dynamics Division (FDD) is pursuing the application of Global Positioning System (GPS) technology to improve the accuracy and economy of spacecraft navigation. High-accuracy autonomous navigation algorithms are being flight qualified in conjunction with GSFC's GPS Attitude Determination Flyer (GADFLY) experiment on the Small Satellite Technology Initiative (SSTI) Lewis spacecraft, which is scheduled for launch in 1997. Preflight performance assessments indicate that these algorithms can provide a real-time total position accuracy of better than 10 meters (1 sigma) and velocity accuracy of better than 0.01 meter per second (1 sigma), with selective availability at typical levels. This accuracy is projected to improve to the 2-meter level if corrections to be provided by the GPS Wide Area Augmentation System (WAAS) are included.
Document ID
19970017196
Document Type
Conference Paper
Authors
Hart, R. C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Long, A. C. (Computer Sciences Corp. Lanham, MD United States)
Lee, T. (Computer Sciences Corp. Lanham, MD United States)
Date Acquired
September 8, 2013
Publication Date
May 1, 1997
Publication Information
Publication: Flight Mechanics Symposium 1997
Subject Category
Astrodynamics
Funding Number(s)
CONTRACT_GRANT: NAS5-31000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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