1. PowerChina Hebei Electric Power Design and Research Institute CO.LTD, Shijiazhuang, China
2. College of Electronic Engineering, Chengdu University of Information Technology, Chengdu, China
3. School of Automobile and Transportation, Xihua University, Chengdu, China
4. China Renewable Energy Engineering Institute, Beijing, China
5. College of Automation, Chengdu University of Information Technology, Chengdu, China
6. CMA. Key Laboratory of Atmosphere Sounding, Chengdu University of Information Technology, Chengdu, China