gps global positioning system

GPS: Global Positioning System. If I buy a GPS system do I also have to pay a fee to find addresses?

There are already so many monthly bills to pay I'd hate to add yet another monthly or yearly fee to my already expanding budget.

No fee, but you may have to buy map updates every couple of years.
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2008-05-27 17:02:36 by Milo B

This NASA produced short film (3:30) describes the Global Positioning System. It is a great summary and can be used to augment the Galaxy ...

It is really cool actually. Ok, so the US gov has put 26 satalites up to orbit the Earth. They are all geosyncranous, (Sp?)so they stay at the same spot over the Earth as it moves. Each of these satallites has an atomic clock on it accurate up to... just really accurate. Then, all they do is broadcast the time.
Now, it is too expensive to have atomic clocks in the GPS recievers, so what happens is that they receive the time from the atomic clock located in Colorado and adjust thier internal clocks everyday so they are really accurate. Then they receive the signals from the satalites. It compares the time that is broadcast from the satalite to the time that it has stored in its memmory and calculates the difference. Since radio transmissions travel at about the speed of light, it can use the time difference to calculate just how far away the satalite is from that possition. It needs a total of at least 4 satalites to claculate where it is in the 3-dementional world we call Earth.
As you can see, it is a relativly simple concept, but the GPS recievers have to be very accurate. Cool stuff though.

BTW, like I said, the GPS satalites are put up by the US Gov, so if they wanted to, they could make them stop broadcasting. Thus, Europe has started to launch satalites of its own so it deosn't have to rely on the US. They won't be operational for a few more years though, but they will be more accurate. (I believe that current GPS recieves are typically accurate up to 9 feet)

2006-09-28 08:59:56 by Prashant

Price: $0.99

Where we can get GPS(Global Positioning System)instrument for surveying the land.

You can get this in survey department or agriculture department.

2009-03-23 13:43:20 by thysesync

Price: $64.00

For Australian car drivers, what GPS are you using, and what was the price (if it didnt come with the vehicle)? Any recommendations?

I use the Garmin Nuvi 660 which is outstanding. The price has come down since they introduced a newer model, the 680, with a couple of additional featues. All the Garmin products are very good. The following link shows a number of different GPS units with customer ratings and reviews:

http://gps.buyerreports.org

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2007-08-09 05:03:53 by Natalie

A GPS receiver can receive signal around that world. No problem with that.
But Maps have not been made for all countries. Philippines is not yet charted.
But dont worry, in the next 3-4 years I think the whole world will be.

Now, at the most, you can get a GPS receiver like Garmin Colorado, and get a basic world map. In this, you won't get street names and any such details, but you can see positions, basic terrains etc in Philippines.

2008-09-10 06:42:14 by ebbb6108