| Zugriffsnummer | 38264 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Using a heterodyne vibrometer in combination with pulse excitation for primary calibration of ultrasonic hydrophones in amplitude and phase |
| Autor(in); Institution |
Weber, Martin; 1.6, Schall, PTB-Braunschweig
Wilkens, Volker; 1.6, Schall, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 54 (2017), 4, 432 - 444 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP |
| Klassifikationscode | PACS: 06.20.fb ; PACS: 43.35.+d ; PACS: 43.58.+z |
| Freie Schlagworte | calibration ; vibrometer ; hydrophone ; ultrasonics |
| Zusammenfassung | A high-frequency vibrometer was used in conjunction with ultrasonic pulse excitation in order to perform a primary hydrophone calibration. This approach enables the simultaneous characterization of the amplitude and phase transfer characteristic of ultrasonic hydrophones. The method allows a high frequency resolution in a considerably short time for the measurement. Furthermore, the uncertainty contributions of this approach were investigated and quantified. A membrane hydrophone was calibrated and the uncertainty budget for this measurement was determined. The calibration results are presented up to 70 MHz. The measurement results show good agreement with the results obtained by sinusoidal burst excitation through the use of the vibrometer and by a homodyne laser interferometer, with RMS deviation of approximately 3% to 4% in the frequency range from 1 to 60 MHz. Further hydrophones were characterized up to 100 MHz with this procedure to demonstrate the suitability for very high frequency calibration. |
