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Elimination of artifacts on aperture synthesis images using ultrasonic sensor's directivity and the ratio of intensity
Author(s) -
Tachioka Yuuki,
Hirano Takashi,
Ishii Jun
Publication year - 2013
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21875
Subject(s) - directivity , ultrasonic sensor , enhanced data rates for gsm evolution , intensity (physics) , acoustics , aperture (computer memory) , point (geometry) , computer science , artificial intelligence , computer vision , optics , mathematics , physics , geometry , telecommunications , antenna (radio)
Abstract Aperture synthesis images using a small number of ultrasonic sensors contain circular or elliptic artifacts. In this letter, to generate clear images less aected by artifacts with the same number of sensors, we propose a method that eliminates these artifacts using sensor's directivity and the ratio of its intensity. The experiments of detecting a plate were performed in terms of estimation of the edge point and the inclination of the plate. Results show that the proposed method can achieve smaller errors than the conventional method. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.