Funding for this research was provided by:
National Natural Science Foundation of China (11673050)
Key R&D Program of Guangdong province (2018B030325001)
State Key Laboratory of Geo-Information Engineering and Key Laboratory of Surveying and Mapping Science and Geospatial Information Technology of MNR, CASM (2021-01-08)
Article History
Received: 23 August 2021
Accepted: 14 December 2021
First Online: 21 January 2022