1. School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin China
2. Guang Xi Key Laboratory for Spatial Information and Geomatics, Guilin University of Technology, Guilin, Guangxi China
3. The Center for Remote Sensing, Tianjin University, Tianjin China
4. School of Marine Science and Technology, Tianjin University, Tianjin China
5. College of Earth Sciences, Guilin University of Technology, Guilin, China
6. Mechanical & Aerospace Engineering, Old Dominion University, Norfolk, VA USA