GSM localization is the use of multilateration to determine the location of GSMmobile phones, usually with the intent to locate the user. Multilateration, also known as hyperbolic positioning, is the process of locating an object by accurately computing the time difference of arrival (TDOA) of a signal emitted from the object to three or more receivers. ... Not to be confused with Get Some Mates The Global System for Mobile Communications (GSM) is the most popular standard for mobile phones in the world. ...
[edit]
Types
There are several types of Localization-Based Systems:
Cell Identification - The accuracy of this method can be as good as a few hundred meters in urban areas, but as poor as 32 km in suburban areas and rural zones. The accuracy depends on the known range of the particular network base station serving the handset at the time of positioning.
Enhanced Cell Identification - With this method one can get a precision similar to Cell Identification, but for rural areas, with circular sectors of 550 meters.
E-OTD - This is similar to TOA, but the position is estimated by the mobile phone, not by the base station. The precision of this method depends on the number of available LMUs in the networks, varying from 50 to 200 m.
Cell Broadcast - This technology lets mobile operators notify users on their current location. Users’ handsets can display the location name (city, country, etc.), the area code or any other location-relevant information.
[edit]
Cell of Origin (COO) is a mobile positioning technique for finding a callers cell (the basic geographical coverage unit of a cellular telephone system) location. ... The metre, or meter (US), is a measure of length. ... Angle of Arrival, or AoA, is a technique for determining the direction of propagation of a radio-frequency wave incident on an antenna array. ... BTS (Base Transceiver Station). ...
Multilateration, also known as hyperbolic positioning, is the process of locating an object by accurately computing the time difference of arrival (TDOA) of a signal emitted from the object to three or more receivers. ... GPS satellite in orbit, image courtesy NASA The Global Positioning System, usually called GPS, is the only fully-functional satellite navigation system. ... GPS uses a network of 24 satellites to triangulate a receiver’s position and provide latitude and longitude coordinates. ... Internationalization and localization are means of adapting products such as publications or software for non-native environments, especially other nations and cultures. ... Usability is a term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal. ... Industrial Design is an applied art whereby the aesthetics and usability of products may be improved. ... The user interface is the part of a system exposed to users. ...
Feeds |
Contact