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Piscaer, P.J. (author), Gupta, A. (author), Soloviev, O.A. (author), Verhaegen, M.H.G. (author)In this paper, we propose the use of Gaussian radial basis functions (GRBFs) to model the generalized pupil function for phase retrieval. The selection of the GRBF hyper-parameters is analyzed to achieve an increased accuracy of approximation. The performance of the GRBF-based method is compared in a simulation study with another modal-based...journal article 2018