Uploaded April 2026 | Updated September 2026, 2 weeks ago
Learn about all of our PNT products here: sparkfun.com/pnt
What happens when you need accurate GNSS positioning with no cellular connection or internet access? In this video, we break down how Galileo High Accuracy Service (HAS) works and how it can deliver ~20 cm accuracy anywhere in the world, completely free.
We compare standard GNSS accuracy, HAS performance, and RTK corrections to show what you can realistically expect in the field.
What You’ll Learn:
• What Galileo HAS is and how it works
• Real-world accuracy of off-the-shelf GNSS vs HAS vs RTK
• Convergence time and performance tradeoffs
• When HAS is “good enough” vs when you need RTK
• How to evaluate accuracy using known reference points
If you're working in remote environments without connectivity, HAS provides a reliable way to significantly improve positioning accuracy without relying on paid correction services.
Learn about all of our PNT products here: sparkfun.com/pnt
What happens when you need accurate GNSS positioning with no cellular connection or internet access? In this video, we break down how Galileo High Accuracy Service (HAS) works and how it can deliver ~20 cm accuracy anywhere in the world, completely free.
We compare standard GNSS accuracy, HAS performance, and RTK corrections to show what you can realistically expect in the field.
What You’ll Learn:
• What Galileo HAS is and how it works
• Real-world accuracy of off-the-shelf GNSS vs HAS vs RTK
• Convergence time and performance tradeoffs
• When HAS is “good enough” vs when you need RTK
• How to evaluate accuracy using known reference points
If you're working in remote environments without connectivity, HAS provides a reliable way to significantly improve positioning accuracy without relying on paid correction services.
