StackOverflow2013

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plurals

PO
primarykey
Id
2784562
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-05-06T21:16:28.340
FavoriteCount
0
LastActivityDate
2010-05-07T19:55:28.610
LastEditDate
2010-05-07T19:55:28.610
LastEditorUserId
83348
OwnerUserId
83348
ParentId
2673140
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
The answer is that cellular phones use various location methods, most were introduced as part of <a href="http://en.wikipedia.org/wiki/Enhanced_911" rel="nofollow noreferrer">E-911</a> (Enhanced 911) or equivalent emergency service for other countries (e.g. 999 in UK) or since. I don't know if GSM or CDMA has any localization protocols or standards itself beyond whatever E-911 and such requires. So I doubt there is a general API for all mobile phones. Mobile phone localization is done via: <ul> <li>plain GPS</li> <li><a href="http://en.wikipedia.org/wiki/Assisted_GPS" rel="nofollow noreferrer">Assisted-GPS</a></li> <li>Cellular triangulation / multilateration</li> <li>Cell (tower) identification (FCC/etc. cellular tower database lookup)</li> <li>Enhanced Cell Identification (E-911)</li> <li>Uplink-Time difference of arrival (U-TDOA)</li> <li>Time-of-Arrival (TOA)</li> <li>Angle of Arrival (AOA)</li> <li><a href="http://en.wikipedia.org/wiki/E-OTD" rel="nofollow noreferrer">E-OTD</a> (Enhanced-Observed Time Difference)</li> <li>and/or a hybrid of these technologies and approaches.</li> </ul> (Src: <a href="http://en.wikipedia.org/wiki/Mobile_phone_tracking" rel="nofollow noreferrer">Wikipedia / Mobile_phone_tracking</a>) These approaches vary in accuracy and precision from ~35 km (22 mi) to ~5-10 meters (16-32 ft) or better. <blockquote> 3.Is Google uses opencellid database or its own?. </blockquote> It appears that they have their <a href="http://www.codeproject.com/KB/mobile/DeepCast.aspx" rel="nofollow noreferrer">own</a> database without a public documented API. <blockquote> 4.Is there any commercial cellid database for India? </blockquote> I don't know.
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POget location(lat/long) without gps just like my location feature of google maps
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USmctylr
UserOwnerUserId
1. USmctylr
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. POget location(lat/long) without gps just like my location feature of google maps
 singulars
 PostTypePostTypeId
 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTBountyClose
2. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTAcceptedByOriginator
3. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

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