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- Title
Ground Clutter Filtering Dual-Polarized, Staggered PRT Sequences.
- Authors
Sachidananda, M.; Zrnic, Dusan S.
- Abstract
A procedure to filter the ground clutter from a dual-polarized, staggered pulse repetition time (PRT) sequence and recover the complex spectral coefficients of the weather signal is presented. While magnitude spectra are sufficient for estimation of the spectral moments from staggered PRT sequences, computation of differential phase in dual-polarized radars requires recovery of the complex spectra. Herein a method is given to recover the complex spectral coefficients after the ground clutter is filtered. Under the condition of “narrow” spectra, it is possible to recover the differential phase, ΦDP, and the copolar correlation coefficient, ρhv, accurately, in addition to the differential reflectivity, ZDR. The technique is tested on simulated time series and on actual radar data. The efficacy of the method is demonstrated on plan position indicator (PPI) plots of polarimetric variables.
- Subjects
FILTERS &; filtration; WEATHER signals; POLARIMETRY; RADAR; SPECTRUM analysis; POLARIZATION spectroscopy; STATISTICAL correlation; TIME; DETECTORS
- Publication
Journal of Atmospheric & Oceanic Technology, 2006, Vol 23, Issue 8, p1114
- ISSN
0739-0572
- Publication type
Article
- DOI
10.1175/JTECH1904.1