中文说明： 借鉴了主成分分析算法（PCA），一种基于多文档得图像合并技术，用于信号特征提取、信号消噪，意信号卷积的运算,并且绘制图象，滤波求和方式实现宽带波束形成，关于超声波倒车雷达测距的。
English Description：
Using principal component analysis (PCA) algorithm, a kind of based on multi document to image merging technology, used for signal feature extraction, signal denoising, signal convolution operation, and draw the image, filtering and summation way to achieve broadband beam forming on ultrasonic reversing radar ranging of.