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通信信号调制类型的自动识别广泛用于信号确认、干扰辨识、无线电侦听、电子对抗和信号检测等领域。本文在时、频域特征提取的基础上,对通信系统中QPSK、OQPSK、UQPSK这三种调制信号的识别做了一定的研究。将介绍通过提取QPSK、OQPSK、UQPSK时域和频域特征来进行信号调制方式识别的方法。
Automatic recognition of communication signal modulation types is widely used in the fields of signal confirmation, interference identification, radio interception, electronic countermeasure and signal detection. In this paper, based on the time and frequency domain feature extraction, the recognition of QPSK, OQPSK and UQPSK modulation signals in communication system is studied. A method for identifying the signal modulation pattern by extracting QPSK, OQPSK, UQPSK time-domain and frequency-domain features will be introduced.