title: Ultrasonic array for obstacle detection based on CDMA with Kasami codes.
abstract: This paper raises the design of an ultrasonic array for obstacle detection based on Phased Array (PA) techniques, which steers the acoustic beam through the environment by electronics rather than mechanical means. The transmission of every element in the array has been encoded, according to Code Division for Multiple Access (CDMA), which allows multiple beams to be transmitted simultaneously. All these features together enable a parallel scanning system which does not only improve the image rate but also achieves longer inspection distances in comparison with conventional PA techniques.
authors.affiliation: Electronics Department, University of Alcalá de Henares, Campus Universitario, Madrid 28805, Spain. cristina.diego@depeca.uah.es
authors.forename: Cristina
authors.initials: C
authors.lastname: Diego
authors.forename: Alvaro
authors.initials: A
authors.lastname: Hernández
authors.forename: Ana
authors.initials: A
authors.lastname: Jiménez
authors.forename: Fernando J
authors.initials: FJ
authors.lastname: Alvarez
authors.forename: Rebeca
authors.initials: R
authors.lastname: Sanz
authors.forename: Joaquín
authors.initials: J
authors.lastname: Aparicio
mesh_terms: D000162:Acoustics; D014465:Ultrasonics