College of Command and Control Engineering, The Army Engineering University of PLA, Nanjing 210002, China;
73021 Troops, Hangzhou 315023, China;
Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China;
Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China;
College of Command and Control Engineering, The Army Engineering University of PLA, Nanjing 210002, China;