Displacement measurement error and its character of self mixing interferometer are analyzed. The design ruler of self mixing interferometer is presented.
分析了激光自混合干涉仪位移测量误差及特点，提出了干涉仪的设计原则。
In wideband auto-correlation receiver, signal after self-mixing is sine signal. A synthetic algorithm is proposed for sine signal frequency estimation.
在宽带自相关接收机中，自混频后的信号为正弦信号，本文提出了一种综合算法估计正弦信号的频率。
The experimental results prove that nano-particle size can be measured reasonably by using the self-mixing effect technique combined with the improved projection algorithm.
实验结果证实了激光自混合干涉技术结合改进的投影算法测量纳米颗粒粒径的可行性。
The vibration characteristic of loudspeakers is investigated experimentally, based on the self-mixing interference effect of semiconductor laser diode.
基于半导体激光器的自混合干涉效应，通过实验研究了扬声器的振动特性。
To overcome the limitation of fringe counting and phase analysis, a new method based on the time-frequency analysis is proposed to process the self-mixing interference signal.
针对条纹计数法和相位分析法处理自混合干涉信号的不足，提出了一种基于时频分析的自混合干涉信号处理方法。
Study on theoretical models of laser self-mixing interference based on optical feedback effect is made in terms of weak optical feedback condition.
文章针对弱光反馈情形，对基于光反馈效应的激光自混合干涉模型进行了探讨。
A turn axle eccentric velocities is measured by applying self-mixing interference in a diode laser.
应用半导体激光自混频干涉技术，对轴运动时的偏心速度进行了测量。
Secondly, we focus on self-mixing speckle interference.
主要研究了自混合散斑干涉。
The frequency of the self-mixing interference signal is acquired by time-frequency analysis, and this frequency is equal to the Doppler shift, so the velocity of external object is gained easily.
该方法通过时频分析获得自混合信号频率随时间的变化，利用激光与外部物体相互作用后的多普勒频移与信号频率相等的关系，非常方便的获得了外部运动物体的速度历史信息。
The frequency of the self-mixing interference signal is acquired by time-frequency analysis, and this frequency is equal to the Doppler shift, so the velocity of external object is gained easily.
该方法通过时频分析获得自混合信号频率随时间的变化，利用激光与外部物体相互作用后的多普勒频移与信号频率相等的关系，非常方便的获得了外部运动物体的速度历史信息。
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