确定绘图后的分布类型

时间:2014-07-10 18:00:22

标签: matlab signal-processing distribution probability-theory

让我们假设我们有以下代码

>> B=xlsread('data_generations1','A1','g8:g301');
>> [pxx,f]=periodogram(B,[],[],100);
>> [peaks,location]=findpeaks(pxx);
>> length(peaks)

ans =

    88

>> hist(peaks,40)
>> [pxx,f]=periodogram(B,[],[],100);
>> pxn=pxx./sum(pxx);
>> [peaks,location]=findpeaks(pxn);
>> hist(peaks,40)
>> probability=peaks./sum(peaks);
>> probplot(probability)
>> [f,xi] = ksdensity(probability);
figure; plot(xi,f);
>> 

我得到了以下图片

enter image description here

请注意信号是由正弦分量+白噪声之和给出的,正弦分量是确定性的(它们的所有分量都是固定的),那么根据图形分布的是什么类型的分布?提前感谢

0 个答案:

没有答案