How GPS Works | How GNSS Receivers Determine Your Location Using Satellite Signals

How GPS Works | How GNSS Receivers Determine Your Location Using Satellite Signals

In this video, we explain how GNSS receivers, such as those in smartphones, handheld GPS units, and dedicated GNSS devices, determine your location on Earth using satellite signals. Discover the process that allows these devices to pinpoint your position with remarkable accuracy. We break down the science behind how satellites transmit data, how your receiver calculates distances, and how multiple satellite signals are combined to determine your precise location.

You'll learn about the role of time measurements, the importance of multiple satellites, and why a fourth satellite signal is essential for correcting errors caused by timing discrepancies. We also touch on how advanced techniques like RTK (Real-Time Kinematic) can further enhance positioning accuracy to centimeter-level precision.

If you're curious about how your smartphone knows exactly where you are, or if you're interested in the technology behind GNSS, this video is for you. Stay tuned to learn more about RTK in our next video and explore detailed information in Emlid docs.

00:00 - Introduction
00:23 - Information from Satellite Signals
01:00 - How GNSS Receivers Use Satellite Signals
02:50 - Why We Need Signals from 4 Satellites
03:28 - Accuracy of GNSS System

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