GPS, which stands for Global Positioning System, is a navigation system that uses satellites to determine the location, speed, and time of a receiver on Earth.
GPS satellites orbit the Earth in a precise pattern, transmitting signals down to Earth.
When the GPS receiver on the ground receives signals from at least three GPS satellites, it can use triangulation to determine its location. To do this, the receiver measures the time it takes for each signal to travel from the satellite to the receiver. Since the signal travels at the speed of light, the receiver can calculate the distance between itself and each satellite based on the time it took for the signal to arrive.
Overall, while GPS has some limitations and challenges, it remains a critical technology for a wide range of applications and industries. As the technology continues to evolve and improve, it is likely to play an even more important role in our lives in the years and decades to come.
GPS and other positioning technologies have had a transformative impact on the way we navigate and understand the world around us. While there are certainly challenges and risks associated with these technologies, the potential benefits are enormous, and they will undoubtedly continue to play a critical role in a wide range of industries and applications for many years to come.
Season 1, Episode 6: Global Positioning System (GPS)
Global Positioning System
GPS
Satellites
Navigation
Geolocation
Triangulation
Trilateration
Orbit
Signals
Time synchronization
Receiver
Antenna
Accuracy
Geodetic datum
Waypoints
Mapping
Surveying
Route planning
Real-time tracking
Location-based services
Wireless communication
Satellite constellations
Signal interference
Military technology
Civilian use
Weather forecasting
Earth observation
Search and rescue
Disaster management
Precision agriculture
Aviation
Maritime navigation
Land surveying
Geocaching
Fitness tracking
Mobile applications.