How to find integral under the noise power spectrum

2015 3 26
2 个回答
更新时间：2015 3 28
5 次查看（30 天）

0 个投票

Hi
I am bit confused with wording. Is the integral under noise power spectrum simply the sum of all values in matrix? If not how to calculate it. Thanks

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回答（2 个）

Honglei Chen
Honglei Chen 2015-3-27

1 个投票

That's one way to do it, just make sure you also multiply the sum with the width of each bin.
Alternatively, you can also use the bandpower function
http://www.mathworks.com/help/signal/ref/bandpower.html
Parag
Parag 2015-3-28

0 个投票

Thank you for your reply, I tried using bandpower function but it shooting me following error. Can you please let me know how to reslove it. My sampling is of 0.1 pixels and and range in power spectrum is from [-5 5]. I will appreciate your help.
if true
b = bandpower(nps_measured,5,[-5 5]);
Error using bandpower>psdbandpower (line 127)
The frequency range must be within the range of F for the specified input.
end

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Parag
Parag
2015-3-26

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Parag
Parag
2015-3-28

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