Fan Li, China University of Geosciences, China; Yong Deng, Changjiang Institute of Survey, Planning, Design and Research, China; Shaoquan Zhang, Nanchang Institute of Technology, China; Yuyun Liang, China University of Geosciences, China; Hong Wang, TidBit Global, Norway; Chengzhi Deng, Nanchang Institute of Technology, China; Jun Li, China University of Geosciences, China