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- W4367308105 abstract "NDVI (Normalized Difference Vegetation Index) time series usually contain a lot of loud noise, which limits its further application. However, the existing filtering and reconstruction methods cannot effectively remove continuous loud noise, which is particularly obvious in cloudy areas. This paper proposes a Spatial-temporal Kriging improved Savitzky Golay filtering algorithm (TSK-SG) based on Spatial-temporal Kriging. By combining the quality factors in MODIS VI products to generate reference data, a Spatial-temporal Kriging variogram model is established and interpolated using the adjacent Spatial-temporal information. Finally, the fitting result is obtained by iterating Savitzky Golay (S-G) filtering based on the quality weight. The NDVI time series curve reconstructed by this method can effectively suppress noise and has a better spatial reconstruction effect, which can better reflect the phenological characteristics of different types of crops." @default.
- W4367308105 created "2023-04-29" @default.
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- W4367308105 creator A5061816288 @default.
- W4367308105 date "2023-04-28" @default.
- W4367308105 modified "2023-10-16" @default.
- W4367308105 title "Reconstruction of MODIS NDVI time series in cloudy area based on Savitzky-Golay filter with spatial-temporal Kriging improvement" @default.
- W4367308105 doi "https://doi.org/10.1117/12.2674378" @default.
- W4367308105 hasPublicationYear "2023" @default.
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