EMFi-Based Ultrasonic Sensory Array for 3D Localization of Reflectors Using Positioning Algorithms

This paper describes a first prototype of an airborne ultrasonic array that combines pulse-compression techniques with positioning algorithms in order to achieve accurate determination of the position of the reflectors placed in front of the array. The new sensory system is based on an array with fo...

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Bibliographic Details
Published in:IEEE sensors journal Vol. 15; no. 5; pp. 2951 - 2962
Main Authors: Jimenez Martin, Ana, Hernandez Alonso, Alvaro, Ruiz, Daniel, Gude, Isaac, De Marziani, Carlos, Perez, Maria Carmen, Alvarez, Fernando J., Gutierrez, Cesar, Urena, Jesus
Format: Journal Article
Language:English
Published: New York IEEE 01.05.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
3D localization
Acoustics
Arrays
Correlation
EMFi
encoding techniques
Receivers
Robot sensing systems
Transducers
Ultrasonic sensory array
Ultrasonic technology
Ultrasonic transducers
Ultrasonic sensory array
3D localization
EMFi
encoding techniques
ISSN:1530-437X, 1558-1748
Online Access:Get full text
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Summary:This paper describes a first prototype of an airborne ultrasonic array that combines pulse-compression techniques with positioning algorithms in order to achieve accurate determination of the position of the reflectors placed in front of the array. The new sensory system is based on an array with four independently controlled emitters and a receiver. The emitters are made of ferroelectrets as active material, leveraging their features to produce broadband air-coupled ultrasonic transducers at low cost. The ultrasonic emissions are encoded with an orthogonal Kasami sequence for each transducer, making possible to transmit simultaneously from each one. Furthermore, one of the main novelties of the proposal is that reflectors are located by means of a spherical trilateration algorithm that uses the time-of-flight of the ultrasonic signals from each transmitter to the receiver, bounced back by the reflector.
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content type line 14
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2014.2384197