The Ultimate Guide to GPS and Mobile Phones
Friday, July 17th, 2009
GPS has been around in mobile phones for a few years now, but for a lot of people it’s purpose isn’t all that clear. As well as being a basic requirement for Satellite Navigation, GPS has a number of other really useful applications that you may not be aware of. This guide explains the basics of GPS and runs through the different types of GPS receiver and software available.
So What Is GPS?
GPS (Global Positioning System) receivers use a network of satellites in orbit around the earth to pinpoint your location (longtitude and latitude) to within a few metres. GPS receivers don’t require a signal from a mobile phone company to work, they just need to be able to see the sky. Locking on to GPS Satellites normally takes a couple of minutes, sometimes longer if you’re already on the move.
Over the last couple of years GPS receivers have found their way in to a number of mobile phones. Mobile Phones work slightly differently to stand alone GPS receivers as they can triangulate their location using nearby transmitters. Mobile phones combine the information from nearby transmitters with the information received from the GPS receiver to give them an exact location. A brief internet connection is normally required to find your location. This type of receiver is called A-GPS (Assisted Global Positioning System).
Both GPS and A-GPS have their strengths and weaknesses. External GPS Receivers tend to lock on to more satellites for more stable tracking. They also have better battery life than A-GPS as they don’t need an internet connection and have no screen to run the battery down. Phones with A-GPS tend to lock on to your location a little bit faster and may still be able to track you if you are indoors or under cover.
GPS Receivers
Generally speaking most GPS receivers are designed to communicate over a Bluetooth connection. Bluetooth is a way that 2 devices can talk to each other wirelessly and is found in most mobile phones and computers. If your PC doesn’t have Bluetooth built in, you can add this function easily by purchasing a USB Bluetooth Adapter.
If you want to use a GPS receiver with your phone, you just need to make sure that your phone has Bluetooth and you’ll need to pair the GPS receiver with your phone. When you launch an application on your phone that requires GPS data, your phone will automatically make the connection to the GPS receiver as long as your receiver is turned on.
External GPS Receivers can add functionality to your phone
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