中文说明： 关于超声波倒车雷达测距的，外文资料里面的源代码，正确率可以达到98％，高斯白噪声的生成程序，包括脚本文件和函数文件形式，包括调制，解调，信噪比计算。
English Description：
Ultrasonic reverse radar ranging, foreign materials inside the source code, with an accuracy rate can reach 98%, Gaussian white noise generator, including script files and function files, including modulation, demodulation, and signal to noise ratio calculations.