分析了周期型激光编码的特点和识别要求，提出了一种针对周期型激光编码工作周期的识别方法并进行了仿真验证。对识别过程进行深入分析，得到了工作周期识别正确率与接收激光脉冲个数的关系。仿真结果表明，只要接收到6个信号，工作周期识别正确率就达到了95％，且识别正确率与编码寄存器的位数无关，从而验证了该方法的有效性。

A method for identifying the working period of laser guided signal code is proposed and simulated on the basis of the characteristics of the code and identification demands. The relation between the identifying probability and the number of the laser pulses is found by the analysis of identification procedure. Simulation results show that the identifying probability can exceed 0.95 when 6 laser pulses are received, the identifying probability is unconcerned with the number of registers and the availability of the method is verified.