水声通信中多普勒系数估计方法研究  

Study on Doppler Coeffcients Estimate in Underwater Acoustic Communication

作　　者：霍雁明 殷敬伟[2] 张晓[2] 

机构地区：[1]云南昆船电子设备有限公司,云南昆明650051 [2]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《科技广场》2012年第3期88-92,共5页Science Mosaic

基　　金：国家自然科学基金项目(51179034;60802060);黑龙江省自然科学基金项目(F201109);上海交通大学海洋工程国家重点实验室开放课题(批准号:1007)

摘　　要：本文针对水声通信中的多普勒效应,提出一种基于Notch滤波器的多普勒系数估计方法,该方法利用Notch滤波器对经过信道的窄带CW脉冲信号频率进行估计,进而得到多普勒系数,并与基于宽带信号的多普勒系数方法进行对比分析。通过计算机仿真基于CW脉冲频率估计与基于宽带信号的多普勒系数估计方法就估计性能进行了对比研究,详细地给出了两种方法各自的优缺点与适用场合。According to the Doppler Effect in the underwater acoustic communication,this paper puts forward Doppler coefficient estimation based on Notch filter.This method makes use of Notch filter to estimate the channel narrowband CW pulse signal frequency,and then gets the Doppler coefficient,and makes a comparative analysis of the Doppler coefficient based on the broadband signal.Finally,the paper makes a comparative study through the computer simulation based on the CW pulse frequency estimation and Doppler coefficient estimation based on the broadband signal,and gives two methods of their advantages and disadvantages and occasions of application.

关 键 词：Notch滤波器 多普勒系数 水声通信 

分 类 号：TN911[电子电信—通信与信息系统]