| 基于LabVIEW的光纤水听器闭环工作点控制系统 |
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| 引用本文： | 王泽锋,胡永明.基于LabVIEW的光纤水听器闭环工作点控制系统[J].光电子．激光,2007,18(10):1154-1157. |
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| 作者姓名： | 王泽锋 胡永明 |
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| 作者单位： | 国防科技大学光电科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家“863”计划资助项目（2006AA092121）;国防科技大学优秀研究生创新资助项目（0623） |
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| 摘 要： | 介绍了一种基于LabVIEW的干涉型光纤水听器闭环工作点控制系统.该系统通过调节光源频率,利用非平衡干涉仪两臂的光程差产生补偿相位,实现了工作点的控制,从而避免了在干涉仪中引入压电陶瓷(PZT),提高了系统的稳定性与可靠性.同时,对传统的信号解调算法进行了改进,提高了解调精度和动态范围.利用该系统对某一干涉型光纤水听器的声压相位灵敏度进行了测量.在频带102～2×103 Hz上,平均灵敏度为-162 dB,频响波动＜±1.0 dB,与采用相位载波(PGC)调制解调方法测量的结果基本一致,验证了该系统的可行性.
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| 关 键 词： | 光纤水听器 信号检测 工作点控制 相位载波(PGC)解调 LabVIEW |
| 文章编号： | 1005-0086（2007）10-1154-04 |
| 修稿时间： | 2006-10-12 |
A Working-Point Control System of Interferometric Fiber-Optic Hydrophone by Closed-Loop Based on LabVIEW |
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| WANG Ze-feng,HU Yong-ming.A Working-Point Control System of Interferometric Fiber-Optic Hydrophone by Closed-Loop Based on LabVIEW[J].Journal of Optoelectronics·laser,2007,18(10):1154-1157. |
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| Authors: | WANG Ze-feng HU Yong-ming |
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| Affiliation: | College of Photoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | A working-point control system of interferometric fiber-optic hydrophone by closed-loop based on LabVIEW was described.No piezoelectric-ceramics were used.The compensated phase was obtained by tuning the laser frequency in a system with unbalanced interferometer.The system realizes passive homodyne detection,which enhances the stabilities and reliabilities of the system.The demodulation algorithm was improved,then the demodulation precision is increased and the dynamic range of the system is extended.A pass... |
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| Keywords: | fiber-optic hydrophone signal detection working-point control phase generate carrier(PGC) demodulation LabVIEW |
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