1. Tongji University, Shanghai, China
2. College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
3. Polar Marine Geosurvey Expedition, Saint Petersburg State University, St. Petersburg, Russia
4. Polar Research Institute of China, Shanghai, China
5. Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Pushchino, Russia
6. Discipline of surveying and mapping, Tongji University, Shanghai, China