中文说明：通过数据采集系统得到的心电信号数据matlab编程实现心电信号的提取。然后加入20信噪比的高斯白噪声，最后用卡尔曼滤波进行处理
English Description：
Through the ECG data obtained from the data acquisition system, matlab programming realizes the extraction of ECG signal. Then the Gaussian white noise of 20 SNR is added, and finally processed by Kalman filter