GPS stands for "The Global Positioning System". It is a satellite controlled navigation system made up of a network of multiple satellites placed into orbit. Initially GPS was only for military applications but latter on the system was made available to general public as well. The Global Positioning System works un-intrupted in all weather conditions and it serves round the clock.
Working of GPS: GPS satellites are rotating the earth in a specified orbit and they transmit signal information to earth. Signals sent by GPS satellites are recieved by GPS reciever which calculate the difference of signal timing sent and recived. The precise calculation determines the distance of reciever from the satellite. The user's position is obtained by a comparison of distance measurment with few more satellite. Electronic mapping reflects the user position which is displayed at the GPS device.

Wednesday, March 30, 2011

GPS Maps: Consumer's Questions and Answers


Garmin nüMaps Lifetime North America Map Updates
Garmin nüMaps Onetime City Navigator North America NT Map Update
Garmin City Navigator for Detailed Maps of the United Kingdom and Ireland (microSD/SD Card)


Garmin nüMaps Lifetime North America Map UpdatesGarmin nüMaps Onetime City Navigator North America NT Map Update
Garmin City Navigator for Detailed Maps of the United Kingdom and Ireland (microSD/SD Card)   


Garmin City Navigator NT SD Card for Garmin GPS Units

Q. how do I download new maps for my gps?

Ans.1:Most phones come with the Maps application. However, if your phone did not come with the program:
Go to your Application downloader & search either Google Maps or any sort of maps that you would prefer.

Ans.2: Please tell us which GPS you have. Then we can provide specific instructions for updating the map on that GPS unit.

Garmin City Navigator NT SD Card for Garmin GPS Units
Garmin City Navigator Europe NT for Detailed Maps of Eastern and Western Europe (DVD)
New Garmin High Quality 2011 Numaps Onetimetm North America Dvd Map Update GPS Unit

Garmin City Navigator NT SD Card for Garmin GPS UnitsGarmin City Navigator Europe NT for Detailed Maps of Eastern and Western Europe (DVD) New Garmin High Quality 2011 Numaps Onetimetm North America Dvd Map Update GPS Unit



Q. My GPS told me that maps are more than a year old and should be updated. Garmin charges $79 to update it.
for a download to update. I can buy a new GPS for about $95 that's a year newer and better. Nothing is wrong with my Garmin, however. Is it worth it to spend the $79 or just buy a new one? Or make do with old maps?

Ans.1: Mine's been telling me that for a couple years now...yet seems to get me where I need to go with no problem. I don't plane to update it until I have to do it. There really aren't that many new streets or changes to the roads that would cause a navigation problem for me, so I see no reason to invest in an update.

I think when it comes time to update due to navigation problems, that might be the time for a new GPS anyway, for the new features that will be out at that time in the device.

Ans.2 : I agree with the others. Mine is several years old and I don't use any roads that have changed significantly, so it is OK. Maybe another example of throw away technology - update ? New ?

Ans.3: It really depends on if your area of use has had a large amount of road construction (actual expansion, I mean). If it has then the new/updated version is likely to be necessary, if not, keep on using it until you can't find home.

Q. If i am buying a new gps this week, how can i tell if the maps are the latest ava? Thanks

Ans. Different gps systems allow for map updating.
There are some gps systems available that sync up with the internet to provide updated maps. These, however, are usually subscription based systems. Other systems come with maps that are not upgradeable, and can also be a few years old. Most of the gps software companies receive their maps from the same general mapping contractors. So if these contractors haven't looked at a particular area in awhile, there could be things missing. Examples would be interstate ramps, new subdivisions, etc.

Your best bet is to find your price range and do research on those particular models. Tom-Tom is getting very good reviews at the moment, and seems to be the fan favorite among buyers. Good luck!

Q. Are there any worldwide gps'? I have seen downloads for European maps, are there similar ones available for Asia?
I live in Thailand and travel to Europe and Australia. I have seen the garmin nuvi which has an option of an sd card for European maps. Is there one available for Asia and Australia as well?

Ans. Garmin offers maps for Australia and New Zealand, but even through third party dealers it doesn't appear anything is offered strictly for Thailand.
The countries listed include:

Argentina
Austria
Bahamas
Belgium
Chile
Costa Rica
Croatia
Czech Republic
Finland
France
Germany
Hungary
Korea
Lithuania
Malta
Netherlands
Norway
Peru
Poland
Republic of Turkey
Romania
Russia
Slovakia
South Africa
Spain
Sweden
Switzerland
Ukraine
United Kingdom
Uruguay
Venezuela

Your best bet might be the MapSource® WorldMap v4. It looks like it covers alot of Asia and Africa.  "WorldMap:  For travel outside North America, Europe, South Africa and Australia; take a look at the WorldMap CD, which provides basic worldwide maps. Use the trip and waypoint management function to create routes and waypoints for your trips and transfer them to your GPS. WorldMap is compatible with most Garmin GPS units and is generally recommended only if no other coverage is available for the area."  There is a viewer on the page that you can see the countries it covers.

Their Mapsource offers Australia.

Garmin City Navigator North America for Detailed Maps of the United State, Canada and Mexico (DVD)
Garmin City Navigator North America for Detailed Maps of the United State, Canada and Mexico (DVD)