光纤水听器阵列信号实时解调系统设计与实现  

Design and Implementation of Real-time Demodulation System for Multiplexed Fiber Optic Hydrophone Array

作　　者：江磊[1] 王海斌[1] 黄晓砥[1] 陈德胜[1] 

机构地区：[1]中国科学院声学研究所声场声信息国家重点实验室,北京100190

出　　处：《压电与声光》2011年第3期353-356,377,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(10734100;10904159)

摘　　要：随着现代高性能光纤水听器阵列技术发展,对信号实时解调系统的计算能力、存储能力及传输能力等提出了更高的要求。该文在分析干涉型光纤水听器相位载波(PGC)解调方案的基础上,提出了适合该算法的实时解调系统结构,并采用多片数字信号处理器(DSP)为核心设计实现了一种高速实时解调系统。该实时解调系统的设计充分考虑了PGC信号处理的特点,遵循可编程、可扩展、可重构的原则,为系统性能的提升提供了较大的空间。目前,该实时解调系统已调试成功并通过了外场试验。Higher requirements for the possibilities of calculation,storage and transmission for the real time demodulation are put forward with the development of modem fiber optic hydrophone array technology.Based on the analysis of the PGC algorithm of interference fiber acoustic sensors,a system configuration of real time demodulation is proposed in this paper,using the multichip DSP as the core.The characteristic of the real time demodulation processing is well considered in the design of the system,following the principle of programmable capability,scalability and restructured capability,which will provide more probabilities for the upgrade of the performance of the system.At the present time,the system has been applied in the open water trial successfully.

关 键 词：光纤水听器阵列 相位载波(PGC)算法 并行信号处理 

分 类 号：TN253[电子电信—物理电子学]