Sun, Qing https://orcid.org/0000-0001-7221-2246
Zhao, Yanxia
Zhang, Yi
Che, Xianghong
Yang, Zaiqiang
Song, Yanling
Zheng, Xiaohui
Funding for this research was provided by:
National Key Research and Development Program of China (2019YFD100220)
National Key Research and Development Program of China (2018YFC1505605)
Basic Research Fund of CAMS (2020Y003)
Basic Scientific Research Operating Expenses of the Chinese Academy of Surveying and Mapping (20603020004096004 AR1904)
Article History
Received: 24 November 2019
Accepted: 4 May 2020
First Online: 2 June 2020