[Geowanking] E911 // cellular trilateration accuracy

[Ian | Urban Mapping]

At the risk of asking (another) obvious question, I continue my naove streak
on this listserv



Ive heard very different reports of how accurate cellphone tracking isthe
FAA mandates something like 50% of calls must be traceable to within a range
of 30m but Ive heard some mobile pros say theyve heard of it getting as
good as several feet. Obviously this varies depending on geography (urban,
rural, topography), but does anybody have any idea how the US wireless
carriers stack up? And how does this compare to phones with GPS?





Ian White  ::  Urban Mapping LLC  ::   <mailto:ian at urbanmapping.com>
ian at urbanmapping.com

120 West 45th Street  20th Floor  ::  New York  NY  10036

Tel.212.242.8267  :: Fax.866.385.8266  ::  www.urbanmapping.com




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