Phenology curve estimation via a mixed model representation of functional principal components: Characterizing time series of satellite-derived vegetation indices
基于函数主成分混合模型的物候曲线估计
Vegetation phenology consists of studying synchronous stationary events, such as the vegetation green up and leaves senescence, that can be construed as adaptive responses to climatic constraints. In this paper, we propose a method to estimate the annual phenology curve from multi-annual observations of time series of vegetation indices derived from satellite images. We fitted the classical harmonic regression model to annual-based time series in order to construe the…