【作者】 王巍鑫；

【导师】 曹家年；

【作者基本信息】 哈尔滨工程大学 ， 通信与信息系统， 2005， 硕士

【摘要】 光纤水听器是一种抗干扰能力强、灵敏度高、动态范围大的新型系统,在水下探测潜艇方面起着越来越重要的作用,是现代化国防建设的重要研究方向之一。 论文详细论述了干涉型光纤水听器的消偏振衰落技术和PGC零差检测技术;重点分析了PGC数字化实现的关键技术;提出了基于DSP和CPLD的光纤水听器时分(TDM)阵列的数字化解调方案;并在此基础上研究了宽频带干涉信号的两套解调方案;最后利用PGC时分数字化解调方案设计出时分—波分的光纤水听器阵列。 课题完成了硬件电路的调试,最终实现了解调功能,并针对未来光纤水听器时分解调系统的实际应用,在硬件设计和软件编程上提出了一些改进意见。更多还原

【Abstract】 As a kind of new system with strong anti-interfenrence ability, high sensitivity, brand dynamic range, fiber-optic hydrophone plays a more and more important role in detecting submarines, and it is one of the important investigative directions for modern national defense constructions.The dissertation discusses the elimination polarization fading technique and phase-generated-carrier homodyne detection technique of interferometric fiber-optic hydrophone in details; The key technology of digital demodulation is analyzed; A digital demodulation scheme of TDM fiber-optic hydrophone array is put forward based on DSP and CPLD; Then two sets of demodulation scheme of wide band interferometric signal are studied; At last a TDM and WDM fiber-optic hydrophone array based on TDM digital PGC demodulation scheme is designed.We have debugged the hardware circuit and finished the demodulation function in the subject. Aiming at practical application in fiber-optic hydrophone TDM demodulation system in the future, The paper puts forward the improved suggestion on the hardware design and software programme.更多还原