User's Manual Part 2

Processing Algorithms (draft)
RVP8 User’s Manual
April 2003
5–69
This procedure preserves the noise level and/or overlapped weather targets. The result is that
more accurate estimates of dBZ are obtained. In extreme cases when the weather spectrum is
very narrow, there can still be some attenuation of weather of a broad filter is selected.
Inverse Transform
After clutter removal, an inverse DFT (Discrete Fourier Transform) is performed to obtain the
autocorrelations R0, R1 and R2 (optional). The total power T0 in the unfiltered power spectrum
is also computed by summing the spectrum components. Thus the final output of the FFT
approach is identical to the pulse pair approach except that the clutter filtering is performed in
the frequency domain.