ANALYSIS OF ORDER STATISTIC FILTERS APPLIED TO ULTRASONIC FLAW DETECTION USING SPLIT-SPECTRUM PROCESSING

被引：35

作者：

SANIIE, J ^{[1
]}

NAGLE, DT ^{[1
]}

DONOHUE, KD ^{[1
]}

机构：

[1] DREXEL UNIV,DEPT ELECT & COMP ENGN,PHILADELPHIA,PA 19104

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1991年 / 38卷 / 02期

关键词：

D O I：

10.1109/58.68470

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Split-spectrum processing of broadband ultrasonic signals coupled with order statistic filtering has proven to be effective in improving the flaw-to-clutter ratio of backscattered signals. It has been shown that an optimal rank can be obtained with a prior knowledge of flaw-to-clutter ratio and the underlying distributions. The order statistic filter performs well where the flaw and clutter echoes have good statistical separation in a given quantile region representing a particular rank (e.g., minimum, median, maximum). Order statistic filters are analyzed for the situation in which the observations do not contain equivalent statistical information. Through simulation and experimental studies applied to ultrasonic flaw detection, the robustness of order statistic filters is evaluated.

引用

页码：133 / 140

页数：8

共 19 条

[11]

MURTHY R, 1989, IN PRESS QUANTITATIV, V8

[12]

Newhouse V, 1982, ULTRASONICS MAR, P59

[13] RADAR CFAR THRESHOLDING IN CLUTTER AND MULTIPLE TARGET SITUATIONS [J].

ROHLING, H .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1983, 19 (04) :608-621

[14] ANALYSIS OF HOMOMORPHIC PROCESSING FOR ULTRASONIC GRAIN SIGNAL CHARACTERIZATION [J].

SANIIE, J ;

WANG, T ;

BILGUTAY, NM .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1989, 36 (03) :365-375

[15]

Saniie J., 1987, IEEE 1987 Ultrasonics Symposium Proceedings (Cat. No.87CH2492-7), P1015

[16]

Saniie J., 1988, Proceedings of the SPIE - The International Society for Optical Engineering, V931, P173, DOI 10.1117/12.946665

[17]

VAUGHAN RJ, 1972, J ROY STAT SOC B, V34, P308

[18] ORDERED STATISTIC CFAR PROCESSING FOR 2-PARAMETER DISTRIBUTIONS WITH VARIABLE SKEWNESS [J].

WEBER, P ;

HAYKIN, S .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1985, 21 (06) :819-821

[19]

WONG KM, 1987, IEEE T ACOUST SPEECH, V35, P597, DOI 10.1109/TASSP.1987.1165181

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