GB/T 42559-2023 Active
GB/T 42559-2023 Acoustics—Measurement of phase-shifted sensitivity of interferometric fiber-optic hydrophones
Abstract
This document describes the measurement principles, measurement devices, measurement conditions, measurement methods, and measurement uncertainties for measuring the sound pressure phase shift sensitivity of interferometric fiber optic hydrophones using interference fringe counting, Bessel function ratio, phase-generated carrier demodulation, differential time-delay heterodyne demodulation, and 3×3 coupler phase demodulation methods.
This document is applicable to the measurement of the phase shift sensitivity of interferometric fiber optic hydrophones within the frequency range of 10 Hz to 20 kHz.
Note: When the measurement results of the phase shift sensitivity level given by the above methods deviate by more than 3 dB, the measurement results obtained by the interference fringe counting method shall prevail.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 42559-2023 |
| CCS | Acoustic metrology |
| ICS | The noise of the transportation vehicle |
| Implement Date | 2023-12-01 |