The Research Of Signals Digital Modulation Automatic Recognition In Electronic Counter-Measures

Communication technique plays more and more important role in advanced military fields. It becomes a key factor determining the war victory or defeat. Information warfare is now a main battle form of the modern war. Electronic Counter-Measures is a main part of imformation warfare. Communication signals modulation recognition is the precondition of disturbing or intercepting the enemy communication. We can estimate the modulation parameter, once knowing about the modulation types, accordingly we make the strategy of reconnaissance and counterreconnaissance.The technology of communication signals modulation recognition can automatically recognize the modulation fashion of communication signals. It is the important technical basis of universal receiver and intelligent modem which is based on software radio. The classification of modulation types of communication signals is a problem of typical pattern recognition.