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%.
出处
《计量学报》
CSCD
北大核心
2006年第4期339-342,共4页
Acta Metrologica Sinica
关键词
计量学
激光多普勒效应
频移
梯度下降方法
Metrology
Laser Doppler effect
Frequency shift
Gradient search method
