1. School of Automation, Nanjing University of Science and Technology, Nanjing, Peoples's Republic of China
2. Department of Remote Sensing and Photogrammetry, Finnish Geospatial Research Institute, Kirkkonummi, Finland
3. Department of Mathematics, Yangzhou University, Yangzhou, Peoples's Republic of China
4. Communication Systems and NetworkS (CSN) Research Group, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia