Subcentimeter-accuracy localization through broadband acoustic transducers

Author

Prieto, Jose Carlos ; Jimenez, Antonio R. ; Guevara, J.I.

Author_Institution

Inst. of Ind. Autom., Madrid

fYear

2007

fDate

3-5 Oct. 2007

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WISP.2007.4447636

Filename

4447636