中文说明：基于特征参数提取的数字信号调制方式识别程序，包括二进制ASK,FSK,PSK,四进制ASK,FSK,PSK调制。提取五种特征参数在低信噪比情况下进行识别。
English Description：
Digital signal modulation recognition program based on feature parameter extraction, including binary ask, FSK, PSK, quaternary ask, FSK, PSK modulation. Five kinds of feature parameters are extracted for recognition at low SNR.