GNSS data filtering optimization for ionospheric observation

GNSS ionospheric seismology: Recent observation evidences and characteristics

Wavelet Filtering of GNSS Network Data for the Detection and Identification of Ionospheric Disturbances Caused by Tsunamis

Disturbances Caused by Tsunamis Yu-Ming Yang, James L. Garrison, See-Chen Lee Purdue University 1 Problem Statement Acoustic-Gravity Waves (AGWs) in the neutral atmosphere can induce disturbances in the ionosphere that are subsequently observable in trans-ionospheric Global Navigation Satellite System (GNSS) measurements of Total Electron Content (TEC). Disruptive events on the Earth’s surface,...

A Comprehensive Method for GNSS Data Quality Determination to Improve Ionospheric Data Analysis

Global Navigation Satellite Systems (GNSS) are now recognized as cost-effective tools for ionospheric studies by providing the global coverage through worldwide networks of GNSS stations. While GNSS networks continue to expand to improve the observability of the ionosphere, the amount of poor quality GNSS observation data is also increasing and the use of poor-quality GNSS data degrades the acc...

Ionospheric Sounding and Tomography by GNSS

Studies of the ionosphere and the physics of the ionospheric processes rely on the knowledge of spatial distribution of the ionospheric plasma. Being the propagation medium for radio waves, the ionosphere significantly affects the performance of various navigation, location, and communication systems. Therefore, investigation into the structure of the ionosphere is of interest for many practica...

Accurate reference ionospheric model for testing GNSS ionospheric correction in EGNOS and Galileo

This work presents a procedure to assess ionospheric models tailored for Global Navigation Satellite System (GNSS) applications. The test is based on actual carrier-phase measurements. Using this strategy, the accuracy of the ionospheric broadcast models for Global Positioning System (GPS), Galileo and the European Geostationary Navigation Overlay System (EGNOS) is assessed. These models are co...