Validation Technique for Modeled Bottomside Ionospheres via Ray Tracing
Technical Report,01 May 2018,01 Mar 2020
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
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A new method for validating ionosphere models using High Frequency HF angle of arrival AoA data is presented. AoA measurements from a field campaign held at White Sands Missile Range, New Mexico, USA in January 2014provide the actual elevation angle, azimuth and group delay results from 10 transmitter-receiver circuits. Simulated AoAs are calculated by ray tracing through the electron density profiles predicted from the ionosphere models hosted by NASAs Community Coordinated Modeling Center IRI-2016, USU-GAIM, GITM, CTIPe, TIE-GCM, and SAMI3.Through the implementation of metrics including Mean Absolute Error, Prediction Efficiency, Correlation Coefficient, and others, we are able to compare and analyze model performance using this new model validation approach. The wide variety of metrics determine model performance quantitatively and qualitatively by analyzing behavior over time.
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