Link-16信号MSK调制模式识别方法

针对Link-16信号采用的最小频移键控(MSK)调制模式,提出了一种基于瞬时特征参量与频谱特征的识别方法。该方法分2个层次进行调制识别,首先利用瞬时特征参量对幅移键控(ASK)、频移键控(FSK)和相移键控(PSK)、MSK信号进行识别,然后再利用频谱特征对MSK、PSK信号进行识别。最后,在特定的数据长度、信号幅度和信噪比的条件下,理论分析与仿真验证该算法易于实现、识别性能较好(90%)。

MSK Modulation Mode Recognition Method of Link-16 Signal

Aiming at minimum shift keying（MSK）modulation mode used by Link-16 signal,this paper proposes a recognition method based on instantaneous characteristic parameter and spectrum features.Two levels of modulation recognition are executed in the method.Amplitude shift keying（ASK）,frequency shift keying（FSK）,MSK and phase shift keying（PSK）signals are recognised by means of instantaneous characteristic parameters,then MSK,PSK signal is recognized by using spectrum features.Finally,under the conditions of certain data length,signal amplitude and signal to noise ratio（SNR）,both the theoretical analysis and simulation confirm that this method is easy to be realized and has a high recognition rate（〉90%）.