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Aliasing Effects and Sampling Theorems of Spherical Random Fields when Sampled on a Finite Grid

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Abstract

Aliasing effects are investigated for spherical random fields sampled on a finite grid. Using the spherical harmonics expansion, it is shown that for a band-limited spherical random field its trend and spectrum can be uniquely reconstructed from the sampled field if the sampling points are judiciously designed. Analytical expressions are also obtained for aliasing errors in the trend and the spectrum when the field is not band-limited.

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Authors and Affiliations

  1. Department of Statistics, Texas A&M University, College Station, TX, 77843, U.S.A.

    Ta-Hsin Li

  2. Department of Meteorology, Texas A&M University, College Station, TX, 77843, U.S.A.

    Gerald R. North

Authors
  1. Ta-Hsin Li
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  2. Gerald R. North
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Li, TH., North, G.R. Aliasing Effects and Sampling Theorems of Spherical Random Fields when Sampled on a Finite Grid. Annals of the Institute of Statistical Mathematics 49, 341–354 (1997). https://doi.org/10.1023/A:1003171131391

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  • DOI: https://doi.org/10.1023/A:1003171131391

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