Ionosphere modeling apparatus and methods

Details Ionosphere modeling apparatus and methods Ionosphere modeling apparatus and methods

2011-01-11

2011-01-11

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357260

Reexamination Certificate

active

07868820

ABSTRACT:
Methods and apparatus which characterize the ionospheric error across a network of GNSS reference stations are presented. The method relies on dual-frequency phase measurements in a geometry-free linear combination. The data are filtered for ambiguities and the characteristic parameters of the ionosphere. In combination with filter results from other combinations of phase measurements (ionosphere free combination), the physically-based model provides rapid and reliable ambiguity resolution.

REFERENCES:
patent: 5477458 (1995-12-01), Loomis
patent: 5899957 (1999-05-01), Loomis
patent: 6356232 (2002-03-01), Rocken et al.
patent: 6799116 (2004-09-01), Robbins
patent: 2005/0101248 (2005-05-01), Vollath
S.M. Radicella et al.,A Flexible 3D Ionospheric Model for Satellite Navigation Applications, Proceedings GNSS 2003, Japan.
F. Azpilicueta et al.,Optimized NeQuick Ionospheric Model for Point Positioning, Proceedings GNSS 2003, Japan.
O.L. Colombo et al.,Resolving Carrier-Phase Ambiguities on the Fly, at more than 100 km from nearest Reference Site, with the Help of Ionospheric Tomography, Ion GPS 1999, Nashville.
M. Hernandez-Pajares et al.,New Approaches in Global Ionospheric Determination using Ground GPS Data, Journal of Atmospheric and Solar-Terrestrial Physics (61) 1999, 1237.
M. Hernandez-Pajares et al.,Application of Ionospheric Tomography to Real-Time GPS Carrier-Phase Ambiguities Resolution, at Scales of 400-1000 km and with High Geomagnetic Activity, Geophysical Research Letters, 13 (27) 2000, 2009.
M. Hernandez-Pajares et al.,Precise Ionospheric Determination and its Application to Real-Time GPS Ambiguity Resolution, Ion GPS 1999, Nashville.
Y. Liu et al.,Development and Evaluation of a New 3-D Ionospheric Modeling Method, Navigation 4 (51) 2004, 311.
A.J. Hansen et al.,Ionospheric Correction Using Tomography, Ion GPS 1997, Kansas City.
D. Odijk,Improving Ambiguity Resolution by Applying Ionosphere Corrections from a Permanent GPS Array, Earth Planets Space 10 (52) 2000, 675.
D. Odijk,Weighting Ionospheric Corrections to Improve Fast GPS Positioning Over Medium Distances, Ion GPS 2000, Salt Lake City.
D. Odijk, Fast Precise GPS Positioning in the Presence of Ionospheric Delays, Ph.D thesis, Dept. of Mathematical Geodesy and Positioning, Delft University of Technology, Delft University Press, The Netherlands, 2002.
T. Richert et al.,Ionospheric Modeling, GPS World, Jun. 2005, 35.
S. Bassiri et al.,Modeling the Global Positioning System Signal Propagation Through the Ionosphere, TDA Progress Report 42-110, Aug. 1992.
D. Bilitza,International Reference Ionosphere 2000, Radio Science 2 (36) 2001, 261-275.

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