Abstract: A novel Modified Gabor Spectrum（MGS） method is proposed.Restricting the auto-term supports of MGS on the supports of Gabor coefficients，a good Time-Frequency Representation（TFR） is obtained.Compared with the method of Gabor Spectrum（GS），the MGS has three merits.First，computation cost is reduced greatly.Second，the cross-terms are removed effectively and simultaneously the auto-terms are almost unchanged.Thirdly，the resolution and concentration of time-frequency are improved by high order operation.Compared with the methods of GS and AOK，experimental results show better TFR performance of the MGS.

摘要： 提出了一种修正Gabor谱图的新方法，即通过限制Gabor谱图（GS）的自项支撑区域在Gabor系数所估计的支撑区域，获得了很好的时频表示（TFR）。该方法与GS的方法相比主要具有三个方面的优点：首先，减少了运算量；其次，在尽量保持信号各分量的自项不变的同时，有效去除了交叉项；第三，通过增加计算阶数，提高了时频分辨力和聚集性，克服了GS随着阶数的增加而产生严重的交叉项的缺点。实验结果表明，该方法优于GS的方法，同时与自适应最优核（AOK）的方法相比，也达到了较好的TFR结果。