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Tag: GPS

GPS

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  • New DGPS and it Accessories at affordable prices.

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    How GPS works?

    In five logical steps

    Here’s how GPS works in five logical steps:

    • The basis of GPS is “triangulation” from satellites.

      We’re using the word “triangulation” very loosely here because it’s a word most people can understand, but purists would not call what GPS does “triangulation” because no angles are involved. It’s really “trilateration.”

      Trilateration is a method of determining the relative positions of objects using the geometry of triangles.

    • To “triangulate,” a GPS receiver measures distance using the travel time of radio signals.
    • To measure travel time, GPS needs very accurate timing which it achieves with some tricks.
    • Along with distance, you need to know exactly where the satellites are in space. High orbits and careful monitoring are the secret.
    • Finally you must correct for any delays the signal experiences as it travels through the atmosphere.
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    ARMIN 78sc is one of the best hand-head GPS you can trust as a professional

    GARMIN GPS MAP78sc Hand-Head GPS

    For boaters and watersports enthusiasts who want to run with the best, the rugged GPSMAP 78sc includes preloaded U.S. coastal charts and features a 3-axis compass, barometric altimeter, crisp color mapping, a high-sensitivity receiver, new molded rubber side grips, plus a microSD™ card slot for loading additional maps. And it floats!
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