Wi-Fi positioning system: Difference between revisions
mNo edit summary |
|||
| Line 15: | Line 15: | ||
* Wireless LAN Positioning Technology for Cities and Buildings http://www.awiloc.com/ |
* Wireless LAN Positioning Technology for Cities and Buildings http://www.awiloc.com/ |
||
* Combain Mobile, http://www.combain.com/ |
* Combain Mobile, http://www.combain.com/ |
||
* [http://www.netspotapp.com Netspot Site Survey, free wireless site survey software for Mac OS X ] |
|||
{{refend}} |
{{refend}} |
||
Revision as of 22:17, 12 October 2011
Wi-Fi-based positioning system (WPS) emerged as an idea that can solve the positioning in certain situations (like indoors), taking advantage of the rapid growth of wireless access points in urban areas. Skyhook Wireless is one provider of this type of service, maintaining a public database that can be accessed through an API, and get the position based on the access points are accessible from a terminal. Other providers include the Fraunhofer Institute [1] or Google[2]
The localization technique used for positioning with wireless access points is based on measuring the intensity of the received signal (received signal strength in English RSS) and the method of "fingerprinting" [3][4]. The accuracy depends on the number of positions that have been entered into the database. The possible signal fluctuations that may occur can increase errors and inaccuracies in the path of the user. To minimize fluctuations in the received signal, there are certain techniques that can be applied to filter the noise. New laws and regulations are being imposed on VoIP operators to force them to design systems in which access points can determine the position of the terminals in a given environment.[5]
See also
References
- ^ J.Seitz, L. Patiño-Studencka, B. Schindler, S. Haimerl, J. Gutiérrez Boronat, S. Meyer, J. Thielecke. “Sensor Data Fusion for Pedestrian Navigation UsingWLAN and INS"
- ^ http://www.google.com/googleblogs/pdfs/google_submission_dpas_wifi_collection.pdf
- ^ P. Bahl and V. N. Padmanabhan, “RADAR: an in-building RF-based user location and tracking system,” in Proceedings of 19th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM ’00), vol. 2, pp. 775–784, Tel Aviv.Israel, March 2000.
- ^ Y. Chen and H. Kobayashi, “Signal strength based indoor geolocation,” in Proceedings of the IEEE International Conference on Communications (ICC ’02), vol. 1, pp. 436–439, New York, NY, USA, April–May 2002.
- ^ http://www.telecomweb.com/news/1112721769.htm.
- Anthony LaMarca, Yatin Chawathe, Sunny Consolvo, Jeffrey Hightower, Ian Smith, James Scott, Tim Sohn, James Howard, Jeff Hughes, Fred Potter, Jason Tabert, Pauline Powledge, Gaetano Borriello, Bill Schilit: Place Lab: Device Positioning Using Radio Beacons in the Wild. In Pervasive (2005)
- Ekahau. http://www.ekahau.com/
- Qubulus. http://www.qubulus.com/
- Wireless LAN Positioning Technology for Cities and Buildings http://www.awiloc.com/
- Combain Mobile, http://www.combain.com/
- Netspot Site Survey, free wireless site survey software for Mac OS X