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NASA NTRS · 20060046236

A new ionospheric model for wide area differential GPS: the multiple shell approach

Komjathy, A.·Wilson, B. D.·Runge, T. F.·Boulat, B. M.·Mannucci, T. J.·Pi, X.·Reyes, M. J.·Sparks, L. C.
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Komjathy, A., Wilson, B. D., Runge, T. F., Boulat, B. M., Mannucci, T. J., Pi, X., Reyes, M. J., Sparks, L. C.. 2002-01-28. A new ionospheric model for wide area differential GPS: the multiple shell approach. https://ntrs.nasa.gov/citations/20060046236

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GPS

Geodetic networks support the TRF requirements of NASA ESE missions. Each of SLR, VLBI, GPS substantially and uniquely contributes to TRF determination. NASA's SLR, VLBI, and GPS groups collaborate toward wide-ranging improvements in the next 5 years. NASA leverages considerable resources through its significant activity in international services. NASA faces certain challenges in continuing and advancing these activities. The Terrestrial Reference Frame (TRF) is an accurate, stable set of positions and velocities. The TRF provides the stable coordinate system that allows us to link measurements over space and time. The geodetic networks provide data for determination of the TRF as well as direct science observations.

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