It seems that accuracy is vastly improved with a higher density of
cell towers (at least for the symbian cell only version). In Vancouver
it's usually too far off to be useful, but in New York, it was
actually accurate enough for me to use for basic navigation.
On 16-Jan-08, at 12:16 PM, Andrew Turner wrote:
I haven't tried the iPhone version - but the N95 version is similar
(which I found rather good) with just Cell positioning. I imagine
there may be some limits on whether multiple cell towers can be seen
with strengths. Worst case it would put you *at* the location of the
cell tower you are connected to.
Would be interested to know what type of filtering algorithms they're
using to get an estimate from so many 'sensor' measurements of varying
accuracy.
One major problem with the N95 GoogleMaps app is that it locks up if
you lose data connection. Anyone else experienced this on the iPhone
or N95?
On Jan 16, 2008 3:11 PM, S Wotherspoon <[EMAIL PROTECTED]> wrote:
I'm curious to know how the celltower/wifi triangulation is working
for
others. If you've installed v1.1.3 and have tried geopositioning
yourself
please share your results. Here's the info from my last three
attempts:
Actual Location: 8th and Oak Sts., Oakland, CA
Nature of Urban Area: Low rise residential, edge of downtown
WiFi Connected? N
Edge Only? Y
ATT Bar Strength? 5
Circle Radius: 1.75 miles
Crosshairs aligned with actual location? N
Crosshairs how far off? 0.26 miles
Actual Location: 8th and Oak Sts., Oakland, CA
Nature of Urban Area: Low rise residential, edge of downtown
WiFi Connected? N
Edge Only? Y
ATT Bar Strength? 5
Circle Radius: 0.18 miles
Crosshairs aligned with actual location? N
Crosshairs how far off? 0.05 miles
Actual Location: Durant Ave and International Blvd., Oakland, CA
Nature of Urban Area: Single family home residential, suburban
WiFi Connected? Y
Edge Only? N
ATT Bar Strength? 5
Circle Radius: 1.49 miles
Crosshairs aligned with actual location? N
Crosshairs how far off? .18 miles
I also had three failed attempts to geolocate at locations 1 and 2.
The time
to locate is probably around 4-14 seconds. I haven't tried while
driving!
Thanks,
Stella
On Jan 15, 2008 10:44 AM, Mike Liebhold <[EMAIL PROTECTED]> wrote:
liveblogged steve jobs keynote at macworld:
http://www.engadget.com/2008/01/15/live-from-macworld-2008-steve-jobs-keynote/
9:24am ""First: maps with location ... You know have the ability
to find
your current location in maps.
9:26am - Maps demo now -- page curls up, search and directions
buttons
now -- if you've seen the 1.1.3 demo vids, this is exactly it.
"Schoom.
And there we are." as it locates Steve in the Moscone. "I can flip
right
into directions, and it uses my current location to start..."
calcing
the route back to Apple HQ.
9:28am - "We love working with Google.
9:31am - " Well, we're working with two companies. Google, and
Skyhook
wireless -- we've driven the US and Canada and mapped WiFi hotspots,
they have 23m hotspots in their database."
9:33am - "They pick up beacons, triangulate the beacons, and tell
you
where you are -- and Google is doing the same thing triangulating
cell
towers -- we're using both of them, and it works pretty doggone
well. We
have this new add to home screen button... add our apps right to the
home screen."
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Stella Wotherspoon
mobile 415-637-7799
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Andrew Turner
[EMAIL PROTECTED] 42.2774N x 83.7611W
http://highearthorbit.com Ann Arbor, Michigan, USA
Introduction to Neogeography - http://oreilly.com/catalog/neogeography
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