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干涉型光纤水听器的数字化解调
引用本文:于晓之,赵旭宏,朱雪峰.干涉型光纤水听器的数字化解调[J].应用科技,2007,34(6):18-22.
作者姓名:于晓之  赵旭宏  朱雪峰
作者单位:哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001
摘    要:分析了干涉型光纤水听器相位载波(PGC)调制解调原理,给出了由载波信号生成2倍混频信号的方法,并通过对频谱的分析说明了系统可降采样的原理,提出了基于数字信号处理器(DSP)的干涉型光纤水听器相位载波(PGC)检测的数字化实现方法.对硬件系统进行了合理的设计,对软件算法进行了优化,提高了系统的运行效率,满足了实时性要求.

关 键 词:光纤水听器  PGC检测  数字化解调
文章编号:1009-671X(2007)06-0018-05
收稿时间:2006-09-04
修稿时间:2006年9月4日

Digital demodulation of the interferometric fiber-optic hydrophone
YU Xiao-zhi,ZHAO Xu-hong,ZHU Xue-feng.Digital demodulation of the interferometric fiber-optic hydrophone[J].Applied Science and Technology,2007,34(6):18-22.
Authors:YU Xiao-zhi  ZHAO Xu-hong  ZHU Xue-feng
Abstract:This paper analyses the modulation/demodulation principles of phase-generated carrier(PGC) of interferometric fiber-optic hydrophone,then presents a method to generate double mixed signals from the carrier signals.The principle of reducible sampling is demonstrated through the frequency-spectrum analysis.A digital implementation approach to PGC detection of interferometric fiber-optic hydrophone based on DSP is discussed.The hardware system is devised.The algorithm of the software is optimized.The operating efficiency of the system is enhanced to meet the real-time application requirement.
Keywords:DSP
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