| If you've been confounded by all the
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| | speed, sunrises and sunsets, bearing,
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| technical jargon and hype surrounding
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| | distance and more. While they will work
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| GPS, confusing what's turning out to be a
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| | in any weather, some hindrances would be
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| very useful tool, allow me to shed a
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| | electronic interference,buildings, and
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| little light on your roadmap to deciding
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| | certain terrain. A good rule of thumb is
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| whether or not this technology is for
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| | that the units will generally not perform
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| you! Originally designed with military
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| | underwater, indoors, or underground.
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| applications in mind, the technology was
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| | There are currently two Global Navigation
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| made available to mere mortals in hte
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| | Satellite Systems in use. Besides GPS,
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| 1980's for the many and varied uses we've
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| | there is the Russian Global Navigation
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| found so far for these special tools. Not
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| | Satellite System (GLONASS) Protocols are
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| only handy for auto navigation, GPSunits
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| | constantly beingrefined to enhance the
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| have made their way into maritime
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| | abilities of these systems. A bright
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| navigation,backcountry uses, and much,
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| | light on the horizon is Galileo,
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| much more!
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| | scheduled to go online in 2008, which
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| How does GPS work? GPS (which stands for
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| | promises even greater accuracy and
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| Global Positioning System) allows you to
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| | functionality.
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| pinpoint your position anywhere on the
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| | So how do I know which GPS unit is for
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| planet to within an average of 15 meters,
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| | me? Quite a fewchoices now exist for
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| with some units doing much better than
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| | consumers in the GPS marketplace.
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| that. Twenty-four GPS satellites, paid
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| | Whether you need a handheld unit for
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| for and placed in orbit by the Dept. of
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| | backpacking or boating, or one for your
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| Defense courtesy of your tax dollars,
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| | automobile (they are becoming an
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| send signals back to terra firma 24/7.
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| | attractive option!) or for one of a
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| These signals are retrieved by your handy
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| | myriad of uses, there are several
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| dandy GPS receiver which uses three
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| | reputable manufacturers of quality GPS
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| sources (satellites) to triangulate this
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| | units out there to help you find your way
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| information and compute your actual
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| | through the maze of choices. Names like
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| position. If there are four data sources,
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| | Magellan, Garmin, Rino, Etrex and
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| even altitude can be determined. Since
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| | Meridian lead the market, and are readily
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| there are normally eight satellites in
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| | available. Take your time, check out the
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| line of sight from anywhere on earth, the
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| | various features each has to offer, and
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| opportunity for accurate positioning
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| | get yourselfoutfitted with one of the
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| exists. Other things that can be
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| | more useful and efficientnavigational
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| determined besides latitude, longitude,
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| | tools out there today!
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| and altitude would include things like
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|
