A Novel Approach for an Ionospheric Obliquity Process Responsive to Azimuthal Variation

Robert S. Conker and M. Bakry El-Arini

Abstract:	This paper describes a one-directional iterative technique which converts from slant Total Electron Content (TEC) to vertical TEC using information describing the current state of the ionosphere. The method combines the well-known Chapman model of electron density with a spherical harmonics representation of the peak density over a spherical surface. Several parameters either have restricted movement or are kept constant in order for the problem to remain linear. This technique is compared to the standard shell model obliquity factor in order to assess the degree of improvement in accuracy and the conditions under which this occurs. The Parameterized Ionospheric Model (PIM) is used as a truth model.
Published in:	Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998) June 1 - 3, 1998 The Adams Mark Hotel Denver, CO
Pages:	317 - 325
Cite this article:	Conker, Robert S., El-Arini, M. Bakry, "A Novel Approach for an Ionospheric Obliquity Process Responsive to Azimuthal Variation," Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998), Denver, CO, June 1998, pp. 317-325.
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