说明：  利用最小总错误概率准则设计检测器的程序，计算最佳门限，研究门限在一定范围内变化时，Pe随门限变化的情况，给出Pe~ 曲线，对模拟结果进行分析。程序有注释。
(Use of design guidelines for minimizing the probability of error detection procedures, calculate the best threshold of threshold changes in a certain range, Pe threshold changes with the situation, given Pe ~ curve analysis of the simulation results. Procedure notes.)