How does a GPS unit work?

Let’s learn how does a GPS unit work. The most accurate or helpful solution is served by scientificamerican.com.

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How GPS Units Work - Scientific American

How handheld global positioning system devices can ... for less than $5 a unit. ... that work better in large cities and indoors. GPS does not ...

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What is the chance that my portable Magellan Crossover GPS unit can be repaired or work again?

The unit has been used very little, even though it's about four years old. It was working fine on a cross-country trip last month when it stopped functioning in central Texas. Now it won't go past the Warning/Disclaimer page when you turn on the power...

Answer:

It probably can be repaired, at least by a technician with the proper service literature and parts access...

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Why won't a personal camping/hiking GPS unit (like Garmin, Magellan, PC style) work inside an airplane?

I've tried this several times with different devices and can never get a satellite signal.  This confuses me because the same units that I've tried this with can receive a signal indoors with many floors above me.  As long as I'm near a window, I can...

Answer:

Speed and altitude aren't the issue here, because COCOM limits only come into play at 1,000 knots or...

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Answer:

The speedometer in a GPS system can electronically keep track of how fast you are going, and how many...

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GPS receivers require an unobstructed view of the sky, so they are used only outdoors and they often...

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Answer:

The (garmin) GPS works everywhere but it depends on the unit and what maps you bought with it if you...

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Does the GPS (navigation unit) in a 2007 MDX Acura bought in the United States work in Canada?

Can the navigation system in the MDX purchased in the United States be programmed to work in Canada...ie while on holidays etc? If not why not. Please reply asap...thank you

Answer:

GPS is a worldwide thing, so it should work in canada. However, some systems require you to purchase...

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Answer:

GPS works by WiFi or satellite. A iPhone with no service will not provide any GPS information. Ask away...

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Even the best garmin wouldn't be all that helpful, as most roadways don't even show up on maps in the...

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How do a portable tracking gps work.?

i want to know how a gps portable tracking device work when you are tracking someone or a love one. and if you can talk into this device. is this device all in one unit? i need an answer today.

Answer:

You cant talk to it, it is a tracking device not a communication device. It works by using GPS signals...

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