This report describes a low cost indoor position sensing system utilising a combination of radio frequency and ultrasonics. Using a single rf transmitter and four ceiling mounted ultrasonic transmitterst provides coverage in a typical room in an area greater than 8m by 8m. As well as finding position within a room, it uses data encoded into the rf signal to determine the relevant web server for a building, and which floor and room the user is in. It is intended to be used primarily by wearable/mobile computers, though it has also been extended for use as a tracking system.
|Translated title of the contribution||Low Cost Indoor Positioning System|
|Pages (from-to)||42 - 48|
|Number of pages||7|
|Journal||Lecture Notes in Computer Science|
|Publication status||Published - Sep 2001|
Bibliographical noteEditors: Gregory D. Abowd
Name and Venue of Conference: Ubicomp 2001: Ubiquitous Computing: Third International Conference Atlanta, Georgia, USA, September 30 - October 2, 2001, Proceedings