求助多峰拟合

[aandyfu27]

如下图所示的曲线怎样拟合成
图2的形式

[lfssirius]

两个图不是一个类型的数据啊。是时频变换得来的吧？不是拟合的

[yindawei123]

请说清楚你到底想怎么做......

[aandyfu27]

时频变换？？？第一张图就是由时域信号通过FFT变换得到幅-频图，然后将幅值取log10得到的，而后面那个图 是文献中的，
因为我们计算方法都是一样，但就是得不到第二张图来

[trayshleigh]

是你FFT时，加窗的问题，还有分辨率的问题

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[zbhpass]

我也想知道怎么拟合这种图形，要代码的，能返回高斯函数参数的