中文说明：阵列信号处理的高分辨率估计，通过虚拟阵元进行DOA估计，关于超声波倒车雷达测距的，能量谱分析计算,应用小区域方差对比，程序简单，有CDF三角函数曲线/三维曲线图。
English Description：
Array signal processing of high resolution estimation. Through the virtual array for DOA estimation of ultrasonic reversing radar ranging, the calculation of the energy spectrum analysis, application of small regional variance contrast, the program is simple, the CDF trigonometric curves / 3D graph.