Speaker
Description
The thermosphere is a crucial layer of Earth's atmosphere, extending from approximately 80 to 600 kilometers above the surface. It plays a key role in atmospheric dynamics and influences various space-based activities, including satellite operations and communications. Understanding its density and how it changes is vital for predicting satellite trajectories, ensuring the longevity of spacecraft, and improving space weather forecasts. Global Navigation Satellite System (GNSS) Precise Orbit Determination (POD) offers an innovative approach to monitoring the thermospheric density state. This method leverages the high-precision measurements provided by GNSS technology to assess changes in the thermosphere, which is critical for understanding atmospheric conditions and space weather. An increasing number of LEO satellites are now being equipped with POD antennas for navigation, highlighting the growing importance of precise orbital tracking. This widespread adoption of POD technology on LEO satellites makes it an invaluable tool for both navigation and atmospheric studies. This presentation explores the potential of GNSS POD to advance our understanding of thermospheric variability, emphasizing its applications in orbit prediction, drag modeling, and space weather analysis. To fully realize the benefits of this technology, international collaboration is essential for the cross-verification of density models and enhancement of data reliability. Strengthening global partnerships in this domain will pave the way for more accurate atmospheric models and more resilient satellite operations in an increasingly space-reliant world.
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