Where does GPS in car get its network from ?

Question

I know that GPS in a mobile phone gets its network from sim card.
I saw the new Indica vista car has GPS in it.
How does the GPS get its network?
Do I have to insert a sim card s we have in mobile phones or do I need to plug in the wireless internet dongle (like mts, photon etc).
Or is it that the provision is already made by tata motors ?
If tata motors have made the provision for it, do we need to pay anyone for using the GPS service every time we use it on monthly or early basis ?
Also please tell me where do we get the maps from for that car gps?

Answer 1

GPS devices get their information from satellites circling the Earth connecting to the electronic circuitry in the device. You do not pay for the service, but you need to upgrade maps every year or so. You buy the maps from the maker of the device, through a sales outlet for whichever brand you own. Some makers will offer a bundle price that will allow you free map upgrades for several years.

Answer 2

Mobile phones use A-GPS: a combination of GPS and mobile network for location detection.



Cars and other equipments use GPS, that take the help of satellites that are orbiting the Earth, to track a user. Thus GPS units in cars do not need sim cards. Subscriptions are needed from mapmyindia etc for their maps and voice guidance systems etc.



GPS uses a lot of power and takes time, thus cars and other big objects or moving things can be tracked. But for a mobile, the device is very small, and has limited batter resources, thus A-GPS is sued that takes the help of the service provider for easier and faster location tracking.

Answer 3

You get your GPS signals courtesy of the United States Air Force. They are the ones who designed, launched and positioned the 26 satellites that are orbiting the earth, and are providing the radio signals that are free for anyone to use to operate a GPS receiver. You MAY have to pay to use the software in your GPS unit, or to update the maps that come with the system, but the radio signals are free.



There are several different methods for capturing and processing the signals from the satellites. If you want to know about the specific phone or GPS receiver you are using, you'll have to ask the manufacturer.

Answer 4

Simple answer can be maps which you use in mobile is getting the each and every location from mobile network whereas in GPS fitted in car every place is preloaded by the device manufacturer. So there is no need for mobile network to provide those data. Mobile using GPS finds the location coordinates and then using that the locations database are downloaded from network. In car GPS these data are preloaded so just GPS coordinates are enough to show them on map.

Answer 5

GPS signals are provided by satellites and not by cell networks.



Some GPS units incorporate a SIM card as well, but that's just a refinement which may allow A-GPS (greater accuracy by triangulation from cell masts) and can allow live traffic updates and other data services. It's possible to get traffic updates on units lacking a SIM card, but they do so using Radio Data Services (RDS) but that's a passive one-way distribution of data unlike SIM units which can let the traffic monitoring network know where they are and what speed they're doing. Aggregating data sent by SIM-equipped GPS receivers enables much faster and more responsive traffic updates.