05 🛰️ GPS & Location Services
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7 Terms
What does GPS stand for, and who created the technology?
Global Positioning System; created by the United States Department of Defense.
How many satellites does a device need to see to get an accurate GPS reading?
Four
What three positional values does GPS determine?
Longitude, latitude, and altitude above sea level.
How does GPS technically determine your location?
By using differences in the signal received from multiple satellites.
Besides GPS satellites, what other technology can help determine your location using nearby Wi-Fi networks?
Apps can use surrounding Wi-Fi networks to estimate location even when GPS isn't available.
How can cellular networks help determine a device's location without GPS?
Cellular networks can triangulate position based on signals from different cellular towers.
Why is it useful that multiple location technologies (GPS, Wi-Fi, cellular triangulation) exist?
If GPS signal is unavailable or weak, these alternative methods can still help determine your location.