检测激光多普勒信号的新方法  

A Novel Approach on Detecting the Signals of Laser Doppler Effect

作　　者：张玉存[1] 刘彬[1] 李群[1] 

机构地区：[1]燕山大学,河北秦皇岛066004

出　　处：《计量学报》2006年第4期339-342,共4页Acta Metrologica Sinica

摘　　要：为了准确地检测激光多普勒信号,提出了一种新的信号检测方法。在算法中应用梯度下降方法推导出算法的系统方程,并且应用庞加莱映射稳定原理给出系统稳定的存在条件。应用该算法能够检测激光多普勒信号,估计多普勒频移。测试结果表明,测出数据的相对误差小于0.7%。A novel approach is proposed to detect the laser Doppler signals, the system equations are deduced through the gradient search method, and the stability of the system is studied by the Poincaré map theory. The approach is used to detect the signals of laser Doppler effect, and the laser Doppler frequency is estimated. The experiments show that the relative error is within 0.7%.

关 键 词：计量学 激光多普勒效应 频移 梯度下降方法 

分 类 号：TB937[一般工业技术—计量学]