The resolution capability of an irregularly sampled dataset: With application to Geosat altimeter data

A formalism is presented for determining the wavenumber-frequency transfer function associated with an irregularly sampled multidimensional dataset. This transfer function reveals the filtering characteristics and aliasing patterns inherent in the sample design. In combination with information about...

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Bibliographic Details
Published in:Journal of atmospheric and oceanic technology 1994-04, Vol.11 (2, pt), p.534-550
Main Authors: Chelton, Dudley B., Schlax, Michael G.
Format: Article
Language:English
Subjects:
Marine
Oceanography
Online Access:Get full text
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Summary:A formalism is presented for determining the wavenumber-frequency transfer function associated with an irregularly sampled multidimensional dataset. This transfer function reveals the filtering characteristics and aliasing patterns inherent in the sample design. In combination with information about the spectral characteristics of the signal, the transfer function can be used to quantify the spatial and temporal resolution capability of the dataset. Application of the method to idealized Geosat altimeter data (i.e., neglecting measurement errors and data dropouts) concludes that the Geosat orbit configuration is capable of resolving scales of about 3 deg in latitude and longitude by about 30 days.
ISSN:0739-0572
1520-0426
DOI:10.1175/1520-0426(1994)011<0534:TRCOAI>2.0.CO;2