PROJECT TITLE :

Modeling of Ionospheric Time Delay Using Anisotropic IDW With Jackknife Technique

ABSTRACT:

Transionospheric signals are affected thanks to the existence of anisotropic plasma within the ionosphere. The precise estimation of ionospheric time delay can play a major role in achieving higher positional accuracy. For the first time, a novel model primarily based on anisotropic inverse distance weighting with “Jackknife” technique is proposed, and its performance is evaluated in the context of the worldwide Positioning System. The performance of the model is compared with 3 distinguished models, specifically, the modified planar work, spline, and Kriging models. Multistation data of a GPS-aided geoaugmented navigation network are used to evaluate the fidelity and sensitivity of the proposed model in near real time. The results thanks to both quiet and disturbed days are encouraging.