mobile positioning

(redirected from location sensing)

mobile positioning

Pinpointing the location of a vehicle or mobile device. Also called "geotracking," mobile positioning is a location-based service (LBS) that is used for emergency purposes as well as proximity marketing, traffic updates, fleet management and asset tracking. Mobile positioning is also used for people tracking; for example, parents can install software in their children's smartphones to monitor their whereabouts (see Big Mother). To track a location, cellular networks, Wi-Fi and GPS are employed alone or in combination.

Cell Towers
The most basic method is cell of origin (COO), which identifies the cell tower closest to the user; however, accuracy is typically around 1,500 feet. Using additional reference beacons and antennas, accuracy can be greatly improved with methods known as Enhanced Observed Time Difference (E-OTD), Time of Arrival (TOA) and Angle of Arrival (AOA). See E-911.

Wi-Fi and GPS
Wi-Fi hotspots are also used for location detection. Databases of known hotspots are constantly updated, and positioning accuracy can be within 100 feet. However, Wi-Fi only works well in dense urban areas, and it serves to augment cellular positioning rather than be the sole locating method.

GPS offers the greatest accuracy (15-75 feet), but requires line of sight to the satellites. Since this cannot be assured in cities with tall buildings, most smartphones employ Assisted GPS (A-GPS), which helps them get the initial fix on the satellites by obtaining orbit and clock data from nearby cell towers.

A-GPS Is Used to Track Everything
Assisted GPS (A-GPS) devices are available to track cars, pets, children as well as anything that may move or be moved. Users can locate the device on the Web or be alerted via email or text message if the A-GPS device moves outside a defined area. See vehicle tracking, Wi-Fi, GPS and iBeacon.
References in periodicals archive ?
Its finest feature is a 360 degree laser turret, which helps map the surface around it, as well as a GPS antenna, which allows for remote location sensing and piloting.
Many such devices have inbuilt functionality such as location sensing, which becomes extensively important in a disaster situation.
Cherrypicks alpha's smart location sensing platform (starbeacon) will also form the cornerstone for the rollout of SHOPPO, cherrypicks O2O Shopping Community Platform business, in the Asia-Pacific region.
It has the additional benefit of improved phone battery life and ultra precise GPS location sensing.
The buying of Lion Precision improves its location sensing abilities and markets being served.
In the lawsuit, Microsoft names seven patents related to a number of mobile device patents, relating to text messaging, battery life, motion sensing, location sensing and power savings, among others, all relating to devices that can sense changes in the user's environment and linking computers and mobile devices.
Zebra Technologies, with 2013 sales of $1 billion, is an industry leader in bar code and enterprise printing, asset tracking, Internet of Things (loT) solutions, and motion and location sensing.
Using location sensing technology, smartphones could even tip users off to shows in places they are visiting.
1) Multi-dimensional electrical scanning technology that is capable of rapid location sensing and maintains a high degree of sensitivity for pedestrian detection by the suppression of noise due to reflections from metallic vehicles.
Bordello, "A survey and taxonomy of location sensing systems for ubiquitous computing", IEEE Computers, vol.
Location sensing methods, relying on GPS or Wi-Fi, can provide accurate location information but are always power hungry.
AP for ruggedized, outdoor environments: the AP 8263 offers a tri-radio, fixed configuration for ruggedized and outdoor deployments and supports integrated, wireless intrusion prevention system (WIPS) and location sensing out of the box with a third radio module.

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