With this method,eleven kinds of digital modulation signals,named 2ASK,4ASK,8ASK,2PSK,4PSK,8PSK,2FSK,4FSK,8FSK,16QAM and 64QAM,can be recognized with approving results when SNR is down to-5 dB.

• 仿真结果表明；所提出方法对信噪比SNR=-5~20 dB的2ASK、4ASK、8ASK、2PSK、4PSK、8PSK、2FSK、4FSK、8FSK、16QAM和64QAM 11种数字调制测试信号均可以较好地识别.