1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
2. College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
3. Vlaamse Instelling voor Technologisch Onderzoek (VITO), Expertisecentrum voor teledetectie (TAP), B-2400 Antwerp, Belgium