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Exponential shapelets: basis functions for data analysis of isolated features

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arxiv 1903.05837 v1 pith:6H6DAHQG submitted 2019-03-14 astro-ph.IM gr-qc

classification astro-ph.IMgr-qc
keywords basisdataexponentialfunctionsshapeletsfeaturesisolatedanalysis
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We introduce one- and two-dimensional `exponential shapelets': orthonormal basis functions that efficiently model isolated features in data. They are built from eigenfunctions of the quantum mechanical hydrogen atom, and inherit mathematics with elegant properties under Fourier transform, and hence (de)convolution. For a wide variety of data, exponential shapelets compress information better than Gauss-Hermite/Gauss-Laguerre (`shapelet') decomposition, and generalise previous attempts that were limited to 1D or circularly symmetric basis functions. We discuss example applications in astronomy, fundamental physics and space geodesy.

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Cited by 2 Pith papers

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