How GPS Works
The impact of Global Positioning Systems (GPS) technology on modern navigation techniques has been very profound. It has also induced fundamental changes in surveying and mapping methods. Today’s GPS receivers are extremely accurate, thanks to parallel multi-channel design. Garmin’s 12 parallel channel receivers are quick to lock onto satellites when first turned on and they maintain strong locks, even in dense foliage or urban settings with tall houses. It provides precise navigation and tracking systems to airplanes, ships at sea, taxi fleets and other land-based transportation systems, emergency vehicles, and even golf carts. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers. Garmin GPS receivers are accurate to 10-15 meters on average.
GPS satellites are powered by solar energy only. They have backup batteries onboard to keep them running in the event of a solar eclipse, when there’s no solar power. Small rocket boosters on each satellite keep them flying in the correct path.
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