1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China
2. Department of Cybernetics, University of West Bohemia and Honeywell, Pilsen, Czech Republic
3. Avionics Engineering Center, Ohio University, Athena, OH, USA
4. Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA
5. Department of Electronics and Telecommunications, Politecnico di Torino, Turin, Italy