Harmonic analysis,also termed Fourier analysis,is used to analyze time series data. It can decompose a time-dependent periodic phenomenon into a series of sinusoidal functions,each defined by unique amplitude and phase values. The harmonic analysis of NDVI time series can characterize the seasonal change of land cover. In this paper,a harmonic analysis was made on the 1-year MODIS NDVI time series data of Shandong Province,with the harmonic characteristics (additive term,amplitude,and phase image) of severa...
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