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Geocaching - Adams
The document provides information about a GPS workshop being run by Sheila Adams. It gives a brief overview of the Global Positioning System, including that it uses 24 satellites in high orbit around the world to determine location using trilateration based on timing signals from 3 or more satellites. It also mentions an activity involving circles and spheres for teaching trilateration and provides a short history of GPS development from the first Navy spacecraft in 1977.
![GPS [ Global Positioning System ]](https://cdn.slidesharecdn.com/ss_thumbnails/finalgps-termpaper-141116110156-conversion-gate02-thumbnail.jpg?width=640&height=640&fit=bounds)
!["GPS" Global Positioning System [PDF]](https://cdn.slidesharecdn.com/ss_thumbnails/globalpositioningsystemgpsmainpdf-101105164539-phpapp01-thumbnail.jpg?width=640&height=640&fit=bounds)
