1993
DOI: 10.1109/70.210793
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A high-resolution sensor based on tri-aural perception

Abstract: By virtue of their low cost and simplicity, ultrasonic sensors are widely used in time-of-flight ranging systems. Unfortunately, correctly interpreting the readings from such sensors proves to be very difficult. We present a high-resolution sensor composed of three ultrasonic sensors: one transmitterh-eceiver and two extra receivers, which allows a significant improvement in the information-extraction process. With this sensor we can determine the position, both distance and bearing, of all isolated objects in… Show more

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Cited by 237 publications
(132 citation statements)
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“…There are three the most elementary reflectors: a wall, a 90 • concave corner and a convex edge. In Peremans et al, (1993) it was presented a method which makes possible to localize and classify an edge and a wall. A corner and a wall are indistinguishable in this approach.…”
Section: Ultrasonic Sensingmentioning
confidence: 99%
“…There are three the most elementary reflectors: a wall, a 90 • concave corner and a convex edge. In Peremans et al, (1993) it was presented a method which makes possible to localize and classify an edge and a wall. A corner and a wall are indistinguishable in this approach.…”
Section: Ultrasonic Sensingmentioning
confidence: 99%
“…The fact that acoustic sensors are light, robust and inexpensive devices has led to their widespread use in many applications [1][2][3][4][5][6][7][8][9]. Although there are di culties in the interpretation of sonar data due to poor angular resolution of sonar, multiple and higher-order re ections, and establishing correspondence between multiple echoes on di erent receivers [10,11], these di culties can be overcome by employing accurate physical models for the reection of sonar. Sonar ranging systems commonly employ time-ofight (TOF) information, recording the time elapsed between the transmission and reception of a pulse.…”
Section: Introductionmentioning
confidence: 99%
“…Tri-aural sensor arrangement which consists of one transmitter and three receivers to di erentiate and localize planes, corners, and edges using only TOF information is proposed in Ref. [10]. A similar sensing conÿguration is used to estimate the radius of curvature of cylinders in Refs.…”
Section: Introductionmentioning
confidence: 99%
“…Accurate range and bearing measurements of multiple targets have been achieved [1,2,4,5], interference can be rejected [2,3,4], and targets can be classified [1,5,6]. Properly implemented, sonar accuracy may exceed that of laser rangefinders, while still being cheap and reliable.…”
Section: Introductionmentioning
confidence: 99%