A characterization is given for the behavior of Global Positioning System phase tracking loops in the presence of severe equatorial ionospheric scintillation. The purpose of this work is to develop a simple, general, and realistic scintillation effects model that can be used to improve the scintillation performance of phase tracking loops. The new characterization of scintillation effects proposed herein employs a differentially-detected bit error model to  predict cycle slipping rates that approximately agree with data-driven simulation tests.

 

Cite and download the paper:
Humphreys, T.E., M.L. Psiaki, and P.M. Kintner, Jr., "Modeling the effects of ionospheric scintillation on GPS carrier phase tracking," IEEE Transactions on Aerospace and Electronic Systems, October 2010.