Fast processing techniques for accurate ultrasonic range measurements
Measurement Science and Technology
Institute of Physics Publishing
45 - 50
Item Usage Stats
MetadataShow full item record
Four methods of range measurement for airborne ultrasonic systems - namely simple thresholding, curve-fitting, sliding-window, and correlation detection - are compared on the basis of bias error, standard deviation, total error, robustness to noise, and the difficulty/complexity of implementation. Whereas correlation detection is theoretically optimal, the other three methods can offer acceptable performance at much lower cost. Performances of all methods have been investigated as a function of target range, azimuth, and signal-to-noise ratio. Curve fitting, sliding window, and thresholding follow correlation detection in the order of decreasing complexity. Apart from correlation detection, minimum bias and total error is most consistently obtained with the curve-fitting method. On the other hand, the sliding-window method is always better than the thresholding and curve-fitting methods in terms of minimizing the standard deviation. The experimental results are in close agreement with the corresponding simulation results. Overall, the three simple and fast processing methods provide a variety of attractive compromises between measurement accuracy and system complexity. Although this paper concentrates on ultrasonic range measurement in air, the techniques described may also find application in underwater acoustics.
Target localization and identification
Signal to noise ratio
Time of flight measurement
Ultrasonic range measurement
Published Version (Please cite this version)http://dx.doi.org/10.1088/0957-0233/11/1/307
Showing items related by title, author, creator and subject.
A wireless passive sensing system for displacement/strain measurement in reinforced concrete members Ozbey B.; Erturk V.B.; Demir H.V.; Altintas, A.; Kurc O. (MDPI AG, 2016)In this study, we show a wireless passive sensing system embedded in a reinforced concrete member successfully being employed for the measurement of relative displacement and strain in a simply supported beam experiment. ...
Location and curvature estimation of spherical targets using multiple sonar time-of-flight measurements Barshan, B. (Institute of Electrical and Electronics Engineers, 1999-12)A novel, flexible, three-dimensional multisensor sonar system is described to localize the center of a generalized spherical target and estimate its radius of curvature. Point, line, and planar targets are included as ...
Comparison of two methods of surface profile extraction from multiple ultrasonic range measurements Barshan, B.; Backent, D. (Institute of Physics Publishing, 2000)Two novel methods for surface profile extraction based on multiple ultrasonic range measurements are described and compared. One of the methods employs morphological processing techniques, whereas the other employs a spatial ...