摘要
光纤水听器是一种建立在光纤、光电子技术上的水下声信号传感器,它通过高灵敏度的光纤相干检测,将水声信号转换成光信号,通过光纤传送至信号处理系统提取声信号信息.针对干涉型光纤水听器PGC解调方案作了研究,并通过模数混合的PGC解调完成了对声信号的检测.
Fiber-optic hydrophone is a subaqueous sound sensor which is built on optical fiber and optoelectronics. By high sensitivity fiber-optic interferential measurement, a water sound signal is converted to aoptic signal, and sent to the signal processing system to pick-up the sound signal information. The phase generated carrier in signal demodulation of fiber-optic interferential hydrophone is studied and the subaqueous sound detection is conducted using mixed A/D PGC demodulation mode.
出处
《应用科技》
CAS
2006年第6期110-114,共5页
Applied Science and Technology
