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  • stevejobsfan0123 Level 8 Level 8 (38,115 points)

    How about not?

     

    lat·i·tude/ˈlatəˌt(y)o͞od/

    Noun:
    1. The angular distance of a place north or south of the earth's equator, usually expressed in degrees and minutes.
    2. Regions, esp. with reference to their temperature and distance from the equator.

     

    Two T's. Not 3 as rockmyplimsoul said.

  • Dah•veed Level 7 Level 7 (32,350 points)

    I'm not sure where you see a post about three of anything. But your post said 2 Ls, and I'm not sure what you are speaking of there. Plus you don't need an apostrophe.

     

    Perhaps you should concentrate on your school work and stop trying to correct folks.

     

    Screen Shot 2012-06-14 at 2.00.09 PM.png

  • Philly_Phan Level 6 Level 6 (12,370 points)

    rockmyplimsoul wrote:

     

    stevejobsfan0123 wrote:

     

    rockmyplimsoul wrote:

     

    so one more minor correction ... satellites do not actually transmit lattitude and longitude information to a GPS receiver.

    One minor correction: Latitude. Two L's.

    And one more ... it was actually two T's

    I did spell it correctly with two Ts.  You spelled it incorrectly with THREE Ts.

    Screen Shot 2012-06-14 at 2.58.01 PM.png

     

    I can get really sticky and tell you that you incorrectly put an apostrophe betweel the "T" and the "s."  The apostrophe does not belong there because the "T" is not possessive.  Of course, I would never say that!

  • 1166dave Level 1 Level 1 (0 points)

    The iPad 2+ as well as my MacBook Pro (im using) have Assisted GPS (A-GPS).  This is not GPS as we use in our Garmin in our car or in a dedicated GPS hand held device.  Those receive signals from orbiting GPS satellites and calculate the difference in time signals sent from the satellites.

     

    iPad 2+ 3G and 4G along with my computer have A-GPS that receives signals from ground items like cell phone towers and computer line routers.  The cell phone towers and computer routers have locations that identify them.  This is how the police and fire department can find your location along with OnStar and other services.  The cellphone doesn't transmit a signal as some people believe.  The cellphone towers have several vertical rectangular shaped objects - these are called panels.  Each panel transmits and receives signals in a very precice direction called a fan.  Some panels can determine how far a transmiting device is in order to adjust the signal strength.  When one panel receives your phone signal it calculates your position within the fan.  If some agency wants to find you they can use two, three, four, five or more cell phone panels to get an ever increasing accuracy. They simply calculate your position within respective fans and get a smaller and smaller area.  However, when you use find my iPhone you normally get a circle that is not exactly your position.  That is because it is calculating data based on the router/server servicing your location.

     

    So if you don't want someone to know where you are, have been, or are going leave your cell phone or laptop at home.

     

    I really want to use my iPad as a navigator, but that will be later I guess.

  • deggie Level 8 Level 8 (49,930 points)

    The iPhones and the iPads with 3g or 4G all have a GPS chip that use satellites to fix their positiion. A-GPS means they use routers and cell towers to get the location more quickly. To add on to your Find My iPhone example you will get the pulsating circle as it uses routers/cell towers to get your initial location, once the device is in sight of at least 3 satellites it will drop down to the pulsating blue ball. It is accurate to about 33 feet at best.

     

    I don't know of any Mac that actually has a GPS chip. They do use routers to be located but this is not A-GPS.

  • tonefox Level 6 Level 6 (8,835 points)

    1166dave wrote:

     

    The iPad 2+ as well as my MacBook Pro (im using) have Assisted GPS (A-GPS).  This is not GPS as we use in our Garmin in our car or in a dedicated GPS hand held device.

    YES IT IS REAL GPS ON IPHONES and 3G IPADS.

     

    For goodness sake read at least some of the explanations presented over the last 300 plus posts.  I note you have edited out the idea of Macs having GPS.

  • paulcb Level 6 Level 6 (19,090 points)

    The iPad 2+ as well as my MacBook Pro (im using) have Assisted GPS (A-GPS).  This is not GPS as we use in our Garmin in our car or in a dedicated GPS hand held device.  Those receive signals from orbiting GPS satellites and calculate the difference in time signals sent from the satellites.

     

    Incorrect.  A-GPS is a step above GPS.  Both use satellites to determine location.  A-GPS uses known cellular/wifi tower/router locations to speed up the initial fix.  Googe for AGPS and see for yourself.

  • Philly_Phan Level 6 Level 6 (12,370 points)

    1166dave wrote:

     

    The iPad 2+ as well as my MacBook Pro (im using) have Assisted GPS (A-GPS).  This is not GPS as we use in our Garmin in our car or in a dedicated GPS hand held device.  Those receive signals from orbiting GPS satellites and calculate the difference in time signals sent from the satellites.

     

    iPad 2+ 3G and 4G along with my computer have A-GPS that receives signals from ground items like cell phone towers and computer line routers.  The cell phone towers and computer routers have locations that identify them.  This is how the police and fire department can find your location along with OnStar and other services.  The cellphone doesn't transmit a signal as some people believe.  The cellphone towers have several vertical rectangular shaped objects - these are called panels.  Each panel transmits and receives signals in a very precice direction called a fan.  Some panels can determine how far a transmiting device is in order to adjust the signal strength.  When one panel receives your phone signal it calculates your position within the fan.  If some agency wants to find you they can use two, three, four, five or more cell phone panels to get an ever increasing accuracy. They simply calculate your position within respective fans and get a smaller and smaller area.  However, when you use find my iPhone you normally get a circle that is not exactly your position.  That is because it is calculating data based on the router/server servicing your location.

     

    So if you don't want someone to know where you are, have been, or are going leave your cell phone or laptop at home.

     

    I really want to use my iPad as a navigator, but that will be later I guess.

    Wow.  You certainly are confused.  I don't even know where to start.

  • 1166dave Level 1 Level 1 (0 points)

    thanks - I was way off.

  • paulcb Level 6 Level 6 (19,090 points)

    No worries.  There's a lot of confusion on this topic, thus the replies you got. 

  • equant Level 1 Level 1 (0 points)

    Hi

    I currently have a IPAD4 wifi only, i have installed memeory map, when i use it in the car (no wifi signal) its happly shows me where i am. I also chek this with google maps and its work fine as well.

    so how its work if it does not have GPS chip

  • deggie Level 8 Level 8 (49,930 points)

    I have no idea since you can't connect to any satellites or cell towers.

  • Meg St._Clair Level 8 Level 8 (44,470 points)

    equant wrote:

     

    so how its work if it does not have GPS chip

    Magic.

  • deggie Level 8 Level 8 (49,930 points)

    Or maybe PFM?

  • Meg St._Clair Level 8 Level 8 (44,470 points)

    Anything is possible.

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