detection of signal in noise environment is one apply of wvd and xwvd . under different snr, compare these two ways and the traditional detection method-match filter detector 研究了信號(hào)的檢測(cè)問題,介紹傳統(tǒng)的檢測(cè)方法?匹配濾波器,以及基于時(shí)頻分析的信號(hào)檢測(cè)?wvd、xwvd的方法。