Adaptive Ionospheric Pierce Point Cut-off Radius Control for Korean Satellite Navigation Systems

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The largest source of positioning error for single-frequency users of the Global Navigation Satellite System (GNSS) is typically the radio delay caused by the ionosphere. Although several analytic function-based models for correcting ionospheric errors are available, grid-based models are preferred because of their high estimation accuracy and low complexity. We propose an adaptive ionospheric pierce point cut-off radius control algorithm for the high-resolution, grid-based correction of ionospheric errors. The proposed scheme adjusts the IPP cut-off radii by comparing the target IPP densities with the current effective densities. Simulation results show that our method gives the required effective IPP density using this cut-off radius control, thus improving the accuracy and availability of the correction service. It is expected that the proposed scheme will make high-resolution, grid-based ionospheric correction available for Korean satellite navigation systems with a local distribution of ground reference stations. System development costs will also be reduced since it will require fewer reference stations.
Publisher
JAPAN SOC AERONAUT SPACE SCI
Issue Date
2015
Language
English
Article Type
Article
Citation

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, v.58, no.3, pp.129 - 135

ISSN
0549-3811
URI
http://hdl.handle.net/10203/205666
Appears in Collection
AE-Journal Papers(저널논문)
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