中文说明：
仿真了恒虚警的平均单元算法，给出仿真结果，同时分析了不同窗口数对虚警率和检测率的影响，并写了详细的注释。
English Description：
Average unit simulation of constant false alarm algorithm, the simulation results are given, at the same time analyzed the different window the influence of the number of false alarm rate and detection rate, and wrote a detailed annotation.