The Shape of Doppler Spectra from Precipitation
The Shape of Doppler Spectra from Precipitation
- New search for: Janssen, Louis H.
- New search for: Van Der Spek, Gerard A.
- New search for: Janssen, Louis H.
- New search for: Van Der Spek, Gerard A.
From October 1982 through May 1983 an extensive weather clutter registration program was executed near the Dutch coast. Coherent echo series of 2 s were obtained from a cluster of adjacent antenna pencil beams every 10 or 15 min., mainly between 16:00 and 08:30 h and on the weekends. The beam cluster was pointed toward the intensity maximum of the clutter volume. The radar operated at 5650 MHz. Spectra with 10 Hz Doppler resolution have been computed by averaging over 19 discrete Fourier transforms of overlapping and tapered subseries of 200 echo vectors. To quantify the deviation from a Gaussian shape a spectral variability is defined which is computed for every estimated spectrum. It is found that the deviation from Gaussian is considerable in about one-fourth of the spectra. A selection of "typical worst case" spectra is presented.
Document information
The Shape of Doppler Spectra from Precipitation
IEEE Transactions on Aerospace and Electronic Systems ; AES-21 , 2 ; 208-219
1985-03-01
2103333 byte
Article (Journal)
Electronic Resource
English
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