1. School of Information and Communication Engineering, Center for Information Geoscience, University of Electronic Science and Technology of China, Chengdu, China
2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, China
3. Satellite Communication Technology Institute, Nanjing Panda Handa Technology Company Ltd., Nanjing, China
4. School of Resources and Environment, Center for Information Geoscience, University of Electronic Science and Technology of China, Chengdu, China