6 . the theoretics of flip - flop anomalous property is perfected , and the oscillatory state of flip - flop is analyzed and the oscillatory frequency calculating equator is provided ; the self - adapting data synchronizer practical circuit with 0 error rate is designed , which can be used to resolve the problem of data synchronizing . the data synchronizer in common use is realized 6 、对触发器的不确定性理论作了改进，讨论了触发器的非稳态过程，给出了一些计算触发器振荡频率的公式，设计了自适应数据同步器实现电路，理论误码率为0 ，为解决数据同步问题提供了新思路，实现了常用数据同步器。
Theoretical model of self - mixing interference in a linear frequency modulated laserdiode is presented by using the dynamic theory of semiconductor laser with weak external optical feedback . the characteristics of oscillation frequency shift and output power changes of the laser diode are analyzed by using the theoretical model . the absolute distance from front facet of laser diode to target can be found by measuring spectrum of output power of the laser diode 使用半导体激光器在弱反馈条件下的动力学理论,建立了线性调频半导体激光器的自混频干涉理论模型.基于该模型,分析了激光器振荡频率偏移与输出功率变化特性.通过测量激光器输出功率谱,可以得到激光器前端面与被测目标之间的距离
