Design and implementation of ultra-high-degree spherical harmonic model of earth topography
SHAN Jianchen, LI Shanshan, FAN Diao, LI Xinxing, HUANG Yan, XING Zhibin
Acta Geodaetica et Cartographica Sinica . 2023, (5): 748 -759 .  DOI: 10.11947/j.AGCS.2023.20220003