Abstract
Rainfall can change the wavenumber distribution in the energy spectrum of radar image. Based on this feature, a wave-number energy spectrum method for retrieving rainfall intensity level in the rain-contaminated radar image is proposed in this paper. A large number of parameter information in the energy spectrum under different rainfall intensities are used to determine the rainfall intensity fitting function, and the rainfall intensity level is retrieved in real time according to the classification standard. Compared with the rainfall recorded synchronously by rain gauge, the experimental results demonstrate that the proposed method has satisfactory retrieval performance of rainfall intensity level.
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