mobile positioning

(redirected from Assisted GPS)
Also found in: Acronyms, Wikipedia.

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.

Assisted GPS Tracks 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.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
The data obtained using assisted GPS, transmitted over a wireless Internet connection will be stored and sorted in the memory of a laptop.
"Accuracy of iPhone Locations: A Comparison of Assisted GPS, WiFi and Cellular Positioning." Transactions in GIS 13 (si): 5-25.
The large screens will be multitouch capacitive with a built-in accelerometer for shifting between portrait and landscape mode, and each will have Wi-Fi, assisted GPS navigation, an FM radio, and a high-resolution camera.
What's more, the phone includes a long-lasting 1500mAh battery, a 3.5mm headphone jack, Bluetooth 2.1 capability, assisted GPS, 32GB of expandable microSD memory and four customizable home screen themes together with enhanced idle lock screen notifications
The AirPrime XM0110 GPS module offers a ready-to-use GPS solution which can be driven simply by AT commands (standard modem control commands), with AT command extension for GPS and Assisted GPS. In addition, to enable an even more optimized and cost-efficient customer product architecture, Sierra Wireless is introducing a new software plug-in for the Open AT(R) Operating System which is provided with most Sierra Wireless AirPrime(TM) embedded modules.
ComScore said mobile subscribers using handsets with advanced positioning technology, known as assisted GPS (A-GPS), are even more likely to use maps in a vehicle.
The Dolphin 9700 uses Windows Mobile 6.5 operating system, and features a 3.7-inch high-resolution display, 45-key QWERTY keypad, global high-speed wireless connectivity, and voice-connected turn-by-turn navigation and assisted GPS. Honeywell
Lenovo will offer Qualcomm's latest Gobi multimode 3G (third-generation) mobile data chipset on ThinkPad laptops, allowing users to connect to the world's two major types of 3G networks and use assisted GPS for location-based services.
Add in Assisted GPS, an FM transmitter and a 5megapixel camera and the N900 starts to look like the real deal.
Amarinth's growing reputation in the Middle Eastern Petrochemical industry for the expedient supply of high specification exotic alloy pumps assisted GPS in their selection to award Amarinth with the order to supply this prestigious project.
As before, there's assisted GPS, this time paired with a built-in compass which works really well with the pre-loaded Google and Nokia maps' sat-nav software, plus an excellent 5MP auto-focus camera that's only let down by a somewhat feeble LED flash.

Full browser ?