Power Spectral Density Unit Conversion

2017 8 28
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更新时间：2017 8 28
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Hello, I wrote a matlab code to find the PSD (Power Spectral Density) of a signal, but my amplitude for frequency is in dB/Hz. I am trying to compare my results to some data of another lab that has amplitude in pm^2/Hz. Would anyone be able to help me how to convert this value for PSD?
Thanks,

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回答（1 个）

Star Strider
Star Strider 2017-8-28

0 个投票

I am not certain what the units of ‘pm’ are. To convert dB (as power) to amplitude, this little anonymous function works:
dB2amplitude = @(dB) 10.^(dB/20);

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