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Road column burial depth nondestructive detecting method based on matching pursuit algorithm
The invention discloses a road column burial depth nondestructive detecting method based on a matching pursuit algorithm. The detecting method is characterized by comprising the following steps: (1), computing a guided waves dispersion curve of a detected column in order to obtain the propagation velocity of a detected guided wave; (2) measuring the height of a transducer to the ground; (3) acquiring a column guided wave detecting signal and projecting a guided wave signal in an atom set; (4) initializing a residual error (guided wave) signal matching variable; (5) computing the inner product of a residual error signal and acquiring an optimum matching atom by traversal; (6) updating the matching variable to obtain a new residual error signal;(7) ending iteration if the iteration satisfies a requirement or repeating the step (5) to the step (7); and (8) acquiring a column end face echo matching atom according to prior information, and obtaining a column burial depth by using a time shifting parameter of the matching atom and the guided wave velocity. The nondestructive detecting method is high in detection precision and fast in detection speed, and has actual engineering application value.
Road column burial depth nondestructive detecting method based on matching pursuit algorithm
The invention discloses a road column burial depth nondestructive detecting method based on a matching pursuit algorithm. The detecting method is characterized by comprising the following steps: (1), computing a guided waves dispersion curve of a detected column in order to obtain the propagation velocity of a detected guided wave; (2) measuring the height of a transducer to the ground; (3) acquiring a column guided wave detecting signal and projecting a guided wave signal in an atom set; (4) initializing a residual error (guided wave) signal matching variable; (5) computing the inner product of a residual error signal and acquiring an optimum matching atom by traversal; (6) updating the matching variable to obtain a new residual error signal;(7) ending iteration if the iteration satisfies a requirement or repeating the step (5) to the step (7); and (8) acquiring a column end face echo matching atom according to prior information, and obtaining a column burial depth by using a time shifting parameter of the matching atom and the guided wave velocity. The nondestructive detecting method is high in detection precision and fast in detection speed, and has actual engineering application value.
Road column burial depth nondestructive detecting method based on matching pursuit algorithm
LIU WEIXU (author) / TANG ZHIFENG (author) / LYU FUZAI (author)
2015-10-21
Patent
Electronic Resource
English
IPC:
G01S
RADIO DIRECTION-FINDING
,
Funkpeilung
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
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