Title :
Subcentimeter-accuracy localization through broadband acoustic transducers
Author :
Prieto, Jose Carlos ; Jimenez, Antonio R. ; Guevara, J.I.
Author_Institution :
Inst. of Ind. Autom., Madrid
Abstract :
Local Positioning Systems (LPS) based on acoustic transducers (mainly ultrasonic) offer accurate localization in indoor environments. However, their performance is limited by transducers´ frequency band and emission pattern. This paper shows how current accuracies can be improved through the use of broadband omnidirectional transducers, methods for orientation- independent accurate ranging and bidirectional emissions. We present the 3D-LOCUS LPS system that minimizes environmental effects such as temperature and air flows, attaining localization errors below 9 mm with a 90% confidence level in an area of 4 m2.
Keywords :
broadband networks; position control; telecommunication control; ultrasonic transducers; 3D-LOCUS LPS system; broadband acoustic transducers; broadband omnidirectional transducers; local positioning systems; subcentimeter-accuracy localization; ubiquitous computing; ultrasonic transducer; Acoustic transducers; Frequency; Global Positioning System; Mobile computing; Privacy; Satellite broadcasting; Temperature; Ultrasonic imaging; Ultrasonic transducers; Working environment noise; Accurate localization; broadband transducers; local positioning systems; ubiquitous computing;
Conference_Titel :
Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on
Conference_Location :
Alcala de Henares
Print_ISBN :
978-1-4244-0829-0
Electronic_ISBN :
978-1-4244-0830-6
DOI :
10.1109/WISP.2007.4447636
