Fast precise GPS positioning in the presence of ionospheric delays
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منابع مشابه
Iranian Permanent GPS Network Receivers Differential Code Biases Estimation Using Global Ionospheric Maps
Measurements of the dual frequency Global Positioning System (GPS) receivers can be used to calculate the electron density and the total electron content (TEC) of the ionosphere layer of the Earth atmosphere. TEC is a key parameter for investigating the ongoing spatial and temporal physical process of the ionosphere. For accurate estimation of TEC from GPS measurements, GPS satellites and GPS r...
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Integer carrier phase ambiguity resolution is the key to precise GPS positioning. For baselines over 10km the errors due to the ionosphere limit the ability to resolve the integer ambiguities within short observation time spans. Of course, one can estimate the ionospheric delays, but the additional unknowns in the model limit the use of very short time spans. On the other hand, very short time ...
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The success of precise GPS positioning over long baselines depends on the ability of resolving the integer phase ambiguities when short observation time spans are required. The ionosphere is the major error source for these kind of positioning problems and due to the current maximum of solar activity the ionospheric delay errors in GPS signals can be much larger than in periods of minimum activ...
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The global positioning system (GPS) is one of the most important and useful technology that has been developed for information and communication technology. The propagated wireless signals along GPS link are affected by the ionospheric electron density irregularities, so the GPS signals may experience amplitude and phase fluctuations. The global navigation satellite system (GNSS) ionospheric sc...
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The maximum-marginal-a-posteriori success rate of statistical decision under multivariate Gaussian error distribution on an integer lattice is almost rigorously calculated by using union-bound approximation and Monte Carlo integration. These calculations are applied to the revelation of the various possible realizations of the reliable and short-period integer ambiguity resolution in precise ca...
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تاریخ انتشار 2002