Book chapter
Techniques Of Hydrophone Calibration
Ultrasonic Exposimetry, pp 217-256
1993
Abstract
This chapter presents a number of calibration techniques for hydrophones used in ultrasonic exposimetry. The topic of hydrophone calibration methods is central to ultrasonic exposimetry, because so many of the measurement techniques rely on a calibrated hydrophone to produce accurate results. The goal of the calibration system therefore is to produce a known pressure field at the hydrophone while measuring the hydrophone’s electrical output. Open-circuit sensitivity implies that the calibration measurement was performed with the hydrophone’s sensitive element loaded with an infinite resistance. “Secondary” calibration indicates that a substitution technique was used, comparing the output from the “unknown” hydrophone with that from a calibrated “reference” hydrophone. The technique of planar hydrophone scanning is one of the most fundamental approaches to both hydrophone calibration and ultrasonic source characterization. The hydrophone’s directional or angular response is usually specified as the relative plane wave sensitivity as a function of angle, at a specified frequency.
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Details
- Title
- Techniques Of Hydrophone Calibration
- Creators
- Mark E Schafer - Drexel University, School of Biomedical Engineering, Science, and Health Systems
- Publication Details
- Ultrasonic Exposimetry, pp 217-256
- Publisher
- CRC Press
- Edition
- 1
- Number of pages
- 37
- Resource Type
- Book chapter
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Other Identifier
- 991019737914804721