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GPS Skills
GPS stands for Global Positioning System. By using a global positioning system, you can calculate your location anywhere on the earth.
GPS is based on a network of satellites and a portable receiver used to determine horizontal and vertical locations on the Earth and to record or display those positions in a coordinate system selected by the user. The GPS satellites are available worldwide and operate 24 hours a day, every day of the year.
The heart of GPS is a constellation of 24 operational satellites and one backup satellite that circle the Earth in carefully calculated orbits. The satellites are managed by the Department of Defense. The satellites transmit a variety of information back to Earth, including the ID and predicted location of each satellite, as well as date and time. A GPS receiver processes the signals from at least four satellites to triangulate its location on the Earth's surface. The precision with which the estimated distance from the satellites to the receiver is known helps define the accuracy of the estimated location. GPS is a passive system. A user simply receives and processes signals. Therefore, there is no limit to the number of users and no charge for access to the satellite signals.
In order to learn more about Global Positioning Systems, please read through the glossary of terms (pdf) or if you have access to a GarminMap76 you can review Becoming Familiar with the Garmin MAP76 Unit (pdf).
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| Operate a Garmin GPSMap76 |
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| Using the Garmin GPSMap 76 that you'll use in the field, navigate through several different tasks. These exercises are intended to reinforce your knowledge of how to use the Garmin GPSMap76. To use this simulator, move your mouse over the GPS unit and click on the button you want to use. You will see a white outline around the buttons you can click on when you're over them. If entering a series of answers in a row, make sure the white outline appears before pressing the button.
The list of activities includes: turning the unit on, checking battery life, marking a waypoint, creating a route, setting up a track log, and more. |
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