Principles of GPS: High-Precision Positioning and GNSS Fundamentals

Modern navigation, geophysics, and autonomous technologies rely heavily on precise location data, yet few understand the underlying mechanics of Global Positioning System (GPS) technology. This text-based course demystifies how satellite signals translate into millimeter-accurate coordinates on Earth. You will build a strong foundation in the physics, mathematics, and engineering principles behind GPS and broader Global Navigation Satellite Systems (GNSS). By reading through clear explanations and working through conceptual exercises, you will learn to analyze positioning errors, apply high-precision techniques, and understand how satellite data is used to monitor tectonic movements and guide autonomous systems. What you'll learn: - Understand the core architecture of GPS and GNSS, including space, control, and user segments. - Calculate precise coordinates using pseudorange measurements, carrier phase tracking, and trilateration principles. - Analyze and mitigate common error sources such as atmospheric delays, multipath interference, and satellite clock biases. - Explore high-precision positioning methods including Real-Time Kinematic (RTK) and Precise Point Positioning (PPP). - Apply GPS principles to geophysical monitoring, tectonic plate movement, and kinematic engineering applications. - Evaluate the future of global navigation, including multi-constellation integration and modern signal structures. The course begins with foundational terminology, satellite orbits, and basic signal structures before advancing to error analysis and high-precision scientific applications. You will progress from basic positioning concepts to advanced geophysical and kinematic tracking methods through structured text-based lessons. This course is designed for beginners, students of Earth sciences, civil engineers, and GIS enthusiasts who want to understand the science of positioning without needing prior experience in satellite geodesy. Start reading today to master the science of satellite positioning and unlock new insights into our moving planet.