Then the demodulated signal and the signal of the reference piezoelectric hydrophone were input into a high-resolution digital phase detector to get the phase difference.

然后，解调后的信号和基准压电水听器的信号输入到一个高分辨率的数字鉴相器的相位差。

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At the meantime, the differences in performances, signal transmission and processing and other aspects between optic fiber hydrophone and traditional piezoelectric transducer have been given.

同时指出光纤水听器与传统压电换能器在性能指标、信号传输和处理等方面的差异。

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This paper reports a kind of two-dimensional combined vector hydrophone of resonant-column type in which a piezoelectric accelerometer are used as are sensing element.

介绍一种采用两只压电加速度计作为敏感元件的二维同振型组合矢量水听器。

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