单径或多径瑞利衰落信道仿真，含噪脉冲信号进行相关检测,结合PCA的尺度不变特征变换(SIFT)算法，包括最小二乘法、SVM、神经网络、1_k近邻法,在MATLAB中求图像纹理特征，关于神经网络控制。- Single path or multipath Rayleigh fading channel simulation, Noisy pulse correlation detection signal, Combined with PCA scale invariant feature transform (SIFT) algorithm, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, In the MATLAB image texture feature, On neural network control.