Klobuchar-like Ionospheric Model for Different Scales Areas

doi:10.11947/j.AGCS.2016.F026

Abstract

Abstract:

Nowadays, Klobuchar is the most widely used ionospheric model in the positioning based on single-frequency terminal, and its different refined models have been proposed for a higher and higher accuracy of positioning. The variation of nighttime TEC with local time and the variation of TEC (total electron content) with latitude have been analyzed using GIMs. After summarizing the model refinement schemes with wide applications, we proposed a Klobuchar-like model for regions with different scales in this paper. The Klobuchar-like, 14-paramaters Klobuchar and 8-paramaters Klobuchar models were established for the small, large and global regions by GIMs (global ionospheric maps) in different solar activity periods and seasons, respectively. Klobuchar-like models, with the correction rates of 92.96%, 91.55% and 72.67% respectively in the small, large and global regions, have higher correction rates than 14-paramaters Klobuchar,8-paramaters Klobuchar and GPS Klobuchar models, which have verified the effectiveness and practicability of Klobuchar-like model.

Key words: ionosphere, Klobuchar-like model, different region scale, model refinement, GIMs

CLC Number:

P228

LIU Chen, LIU Changjian, FENG Xu, XU Lingfeng, DU Ying. Klobuchar-like Ionospheric Model for Different Scales Areas[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(S2): 54-63.

References

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