Home | Navigation & Positioning
GPS, or the Global Positioning System, is a satellite-based navigation system that helps determine location, movement, and timing almost anywhere on Earth.
It is widely used in vehicles, outdoor activity, route planning, emergency response, and practical travel. It also connects naturally to topics like GPS in vehicles, route planning, and backup navigation methods.
GPS is extremely useful, but it works best when combined with awareness, planning, and an understanding of its limitations.
What is this page about?
This page explains what GPS is and how it is used for positioning and navigation.
How GPS Works in Simple Terms
- Satellites orbit the Earth
- They transmit timing and position signals
- Receivers calculate position from multiple signals
Why GPS Is Useful
- Provides location information
- Supports navigation and route planning
- Works in most environments worldwide
- Integrates with many devices and systems
Important Limitations
GPS accuracy can vary with terrain, buildings, satellite visibility, and device quality. That is why pages such as GPS Accuracy and Limitations and Using GPS in Real Situations are important follow-ups.