An Objective Prototype-Based Method for Dual-Polarization Radar Clutter Identification
AbstractA prototype-based method is developed to discriminate different types of clutter (ground clutter, sea clutter, and insects) from weather echoes using polarimetric measurements and their textures. This method employs a clustering algorithm to generate data groups from the training dataset, each of which is modeled as a weighted Gaussian distribution called a “prototype.” Two classification algorithms are proposed based on the prototypes, namely maximum prototype likelihood classifier (MPLC) and Bayesian classifier (BC). In the MPLC, the probability of a data point with respect to each prototype is estimated to retrieve the final class label under the maximum likelihood criterion. The BC models the probability density function as a Gaussian mixture composed by the prototypes. The class label is obtained under the maximum a posterior criterion. The two algorithms are applied to S-band dual-polarization CP-2 weather radar data in Southeast Queensland, Australia. The classification results for the test dataset are compared with the NCAR fuzzy-logic particle identification algorithm. Generally good agreement is found for weather echo and ground clutter; however, the confusion matrix indicates that the techniques tend to differ from each other on the recognition of insects. View Full-Text
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Wen, G.; Protat, A.; Xiao, H. An Objective Prototype-Based Method for Dual-Polarization Radar Clutter Identification. Atmosphere 2017, 8, 72.
Wen G, Protat A, Xiao H. An Objective Prototype-Based Method for Dual-Polarization Radar Clutter Identification. Atmosphere. 2017; 8(4):72.Chicago/Turabian Style
Wen, Guang; Protat, Alain; Xiao, Hui. 2017. "An Objective Prototype-Based Method for Dual-Polarization Radar Clutter Identification." Atmosphere 8, no. 4: 72.
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