Multi-snapshot spike deconvolution via variable projection has an explicit basin of convexity whose radius is controlled by the PSF spectrum, spike separation, and amplitude dynamic range.
On the condition number of Vandermonde matrices with pairs of nearly- colliding nodes
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Characterization of the Basin of Convexity for Multi-Snapshot Spike Deconvolution via Variable Projection
Multi-snapshot spike deconvolution via variable projection has an explicit basin of convexity whose radius is controlled by the PSF spectrum, spike separation, and amplitude dynamic range.