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Difference between revisions of "NVGate Formula Computation"
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NVGate Formula Computation (view source)
Revision as of 15:58, 13 January 2022
, 15:58, 13 January 2022→Envelope spectrum
| Line 163: | Line 163: | ||
I (t) = input (t) * sin (2 * PI * fc * t) | I (t) = input (t) * sin (2 * PI * fc * t) | ||
With fc = Zoom center frequency ; input (t) = input signal. | With fc = Zoom center frequency ; input (t) = input signal. | ||
Then The signals R (t) and I (t) are decimated (zoom factor: 2, 4, 8…). | |||
Then We compute the zoom signal complex spectrum of the zoomed signal. | Then We compute the zoom signal complex spectrum of the zoomed signal. | ||
And the envelope signal is equal to : | |||
Env (f) = 2 * sqrt (RZ (f) * RZ (f) + IZ (f) * IZ (f)) | Env (f) = 2 * sqrt (RZ (f) * RZ (f) + IZ (f) * IZ (f)) | ||
With : RZ (f) = real part of the zoomed spectrum (at frequency f) | With : RZ (f) = real part of the zoomed spectrum (at frequency f) | ||
IZ (f) = imaginary part of the zoomed spectrum (at frequency f) | |||
===Measurement scalar Level=== | ===Measurement scalar Level=== | ||
[[Image:formula_16.png|framed|none]] | [[Image:formula_16.png|framed|none]] | ||