中文说明： 对HARQ系统的吞吐量分析，单径或多径瑞利衰落信道仿真，对球谐函数图形进行仿真,关于超声波倒车雷达测距的，包含了阵列信号处理的常见算法，基于欧几里得距离的聚类分析。
English Description：
Analysis of HARQ system throughput, single path or multipath Rayleigh fading channel simulation, the simulation of the spherical harmonic function graph, about ultrasonic reversing radar ranging and contains the array signal processing of common algorithm, Euclidean distance based clustering analysis.