Title :
Calibration of simulation models for ultrasonic transducers based on implicit calibration
Author :
Carlson, Johan E. ; Martinsson, J. ; Hagglund, F. ; Saremi, Amin
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Lulea Univ. of Technol., Lulea
Abstract :
There are numerous software packages available for modeling of the sound pressure fields emitted by ultrasound transducers and transducer arrays. Accurate modeling of a real-world transducer requires knowledge of several parameters that are generally not known. This paper presents an estimation principle that can be used to calibrate such models, based on measurements of the sound field. The model separates the problem into estimation of the transducer´s electro-mechanical impulse response and its spatial impulse response. The latter being what the software packages generally model. We demonstrate the principle with measurements of the sound field from a non-focused 5 MHz transducer. The results show that the modeled sound field agrees well with measurements.
Keywords :
acoustic field; acoustic variables measurement; calibration; ultrasonic transducer arrays; frequency 5 MHz; simulation model calibration; software package; sound pressure field; spatial impulse response; transducer array; transducer electro-mechanical impulse response; ultrasonic transducer; Acoustic measurements; Acoustic transducers; Calibration; Mathematical model; Software packages; Sonar equipment; Ultrasonic imaging; Ultrasonic transducer arrays; Ultrasonic transducers; Ultrasonic variables measurement; Implicit calibration; transducer modeling; ultrasound measurements;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0372