说明：  用于对遥感植被指数时间序列进行Savitzky–Golay滤波平滑，可减弱天气状况及数据质量因素对于时间序列的不利影响。
(For the remote sensing vegetation index time series Savitzky- Golay filter smoothing, can weaken the weather conditions and data quality factors for the adverse effects of time series.)