Global Navigation Satellite Systems for Earth Observing

Dear Colleagues,

Over the last few decades, Global Navigation Satellite Systems (GNSS) have significantly evolved from a navigation tool to an indispensable part of the Earth observing system. The first GNSS, Global Positioning System (GPS), was initially designed for positioning and navigation with meter-level service, but has soon started playing critical roles in high-precision geodesy, geophysics, and remote sensing, with the precision at the centimeter to the millimeter level. The recent developments of multi-GNSS constellations provide a better opportunity to improve the GNSS service performance. To name a few, (1) a global constellation of more than 100 satellites is currently available, including GPS, GLONASS, Galileo, BDS, and QZSS; (2) the satellite signals have also evolved from dual-frequency to up to five frequencies, and (3) the newly launched Galileo, BDS, and GPS BLOCK III satellites are equipped with much more stable H-maser clocks, which enhances the data analysis precision and robustness. On the other hand, these developments also introduce new challenges in GNSS data processing and result interpretation.

Contributes are invited to present original and innovative studies to improve GNSS analysis and applications, including algorithms, data processing strategies, error modeling, as well as various applications in Earth observing system. We encourage both original articles and review papers, including but not limited to:

• High-precision GNSS processing algorithms and strategies;
• Integrated processing of multi-GNSS and LEO platforms;
• Multi-sensor fusion of GNSS and inertial, Lidar, and visual sensors, etc.;
• New methods, developments, and applications of GNSS tropospheric and ionospheric sounding;
• Earthquake, tsunami, and volcano monitoring and early warning using real-time GNSS.

We look forward to receiving your contributions.

Dr. Jungang Wang
Dr. Haibo Ge
Prof. Dr. Benedikt Soja
Prof. Dr. Maorong Ge
Guest Editors

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