单径或多径瑞利衰落信道仿真，结合PCA的尺度不变特征变换(SIFT)算法，有循环检测，周期性检测。- Single path or multipath Rayleigh fading channel simulation, Combined with PCA scale invariant feature transform (SIFT) algorithm, There are cycle detection, periodic testing.

含噪脉冲信号进行相关检测,考虑雨衰 阴影 和多径影响，采用的是通用的平面波展开法。- Noisy pulse correlation detection signal, Consider shadow rain attenuation and multipath effects Using common plane wave expansion method.