In article <Xns9ABBD467BFB90noonehomecom@208.49.80.253>, Larry
<noone@home.com> wrote:
> > it doesn't 'require' it, but if there's a cell signal available, some
> > of the info that would normally be sent from the gps satellites can be
> > more reliably obtained from the cell towers, thereby dramatically
> > reducing the time to obtain a fix and/or maintaining a fix in weak
> > signal conditions.
>
> Totally false, a fantasy.
actually, it's exactly correct.
....gps info snipped...
> The exact position of every bird is very accurately known. Each bird
> provides very accurate timing pulses from its cesium-beam frequency
> standards fed to it from the ground, even with very accurate clock
> timing. But, from WAY UP THERE, there ISN'T GOING TO BE ANY WAY for ANY
> sellphone, even iPhones!!!, to receive a GPS signal through RF opaque
> objects like BUILDINGS or WALLS or SHEET STEEL ROOF PLATES or even a
> thick canopy of TREES, which absorb what tiny bit of RF that falls on
> your spot on the planet surface into the noise....
that's where the assistance from the cellular network comes into play.
you were paying attention, right?
> THIS is why Sellphone GPS simply isn't going to work in your pocket
> anywhere you happen to be.....THAT IS A PURE FANTASY!
considering that many handheld gps devices work quite well both in a
pocket and inside buildings, there is absolutely no reason that a cell
phone gps will not function just as well, or better.
In message <Xns9ABBB7121ADCDbob@216.196.97.136> The Bob <nospam@bob.com>
wrote:
>GPS does not require assistance.
No, but it sure helps. Compare a warm-start vs a cold-start on any GPS,
knowing roughly where you are and having satellite location
predownloaded significantly helps the GPS user experience.
I'd sure like to know what the iPhone 3G has included, so far I haven't
seen anything specifically saying it does or does not have a true GPS
receiver.
In message <Xns9ABBCECCA7BE1noonehomecom@208.49.80.253> Larry
<noone@home.com> wrote:
>DevilsPGD <spam_narf_spam@crazyhat.net> wrote in
>news:ugf254l3j8hggnq1b4vhdbn333dj56gq2u@4ax.com :
>
>> But like you say, fantasy, must have been the last known location.
>>
>>
>
>Right, thanks. If GPS could do what Sellphone vendors want....GARMIN, not
>them, would have already been doing it.....and they're not because it's
>physically IMPOSSIBLE.
>
>Now, I CAN see the sleazy sellphone bastards bullshitting the customers
>with some GPS app that gives them the lat/long of the towers, which does
>have a GPS receiver in them because it is where the TIME set on your
>sellphone display comes from. Look at a cell near you closely and you'll
>see a little white dome antenna down on the building or near the base of
>the tower feeding a small coax into the building. That's a GPS antenna,
>just like the ones on someone's yacht.
Go look up the AT&T Tilt (aka HTC Kaiser) specifications. It's a true
GPS. The GPS works with wifi and GSM/3G disabled, out in the mountains
without either type of service being available. It can also accurately
report speed and direction.
In article <guh354l0q60vm07u04pmi8hn3n8cbdna2i@4ax.com>, DevilsPGD
<spam_narf_spam@crazyhat.net> wrote:
> In message <Xns9ABBB7121ADCDbob@216.196.97.136> The Bob <nospam@bob.com>
> wrote:
>
> >GPS does not require assistance.
>
> No, but it sure helps. Compare a warm-start vs a cold-start on any GPS,
> knowing roughly where you are and having satellite location
> predownloaded significantly helps the GPS user experience.
exactly.
> I'd sure like to know what the iPhone 3G has included, so far I haven't
> seen anything specifically saying it does or does not have a true GPS
> receiver.
there will no doubt be disassembly photos a day or two after it ships,
if that long. possibly even the same day.
In article <Xns9ABBCECCA7BE1noonehomecom@208.49.80.253>,
Larry <noone@home.com> wrote:
> Right, thanks. If GPS could do what Sellphone vendors want....GARMIN, not
> them, would have already been doing it.....and they're not because it's
> physically IMPOSSIBLE.
iphones can do it, so it's not "impossible"... but GPS systems cannot i
agree... that's why iPhone 1 has WPS and iPhone 2 has WPS and GPS.
In article <Xns9ABBCE1B33A79noonehomecom@208.49.80.253>,
Larry <noone@home.com> wrote:
> That goddamned sales meeting of fanbois didn't "explain" anything of the
> sort. I'm still appalled he was giving 12-year-old kid explanations to a
> room that was supposed to be full of developer professionals....and they
> applauded the most stupid toys.
>
> Show me where the GPS antenna is located on an Iphone and how that antenna
> has a clear view of the sky in your 8th floor living room of the 24 story
> building.
>
> Bullshit....pure bullshit.
you wouldn't need GPS in that situation, the iPhone is smart enough to
use WPS when it is needed. (like your example)
i know steve speaks over your head, but there is no reason to have a
tantrum about it.
Technical Specs of iPhone 3G posted
Linear Mode
