Research on Different Coordinates of Sun and Moon Influence on
GNSS System Errors Correction
1 State Key Laboratory of Geodesy and Earth’s Dynamics, 340 Xudong Street，Wuhan 430077, China
2 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China
3 Institute of Geospatial Information, Information Engineering University, 62 Kexue Road, Zhengzhou 450001, China
Abstract：This paper presents research on differences of sun and moon coordinates from astronomical almanac and JPL ephemeris and the effects of these differences on GNSS navigation and position. The maximum differences are 5×108 and 3×106 m of coordinates of sun and moon calculated with different ephemeris. The difference in angle can be up to 30′ in X direction of the satellite fixed coordinate system between astronomical almanac and DE421 (Y direction is similar to the X direction). Wind\|up correction difference and satellite antenna PCO correction difference can reach 0.3 mm and 3 mm respectively, caused by sun coordinate difference. Solid tidal correction difference can be up to 3 mm caused by coordinate differences of sun and moon. However, the designed PPP experiment has proved that the above\|mentioned influences on the PPP positioning can be ignored. The most efficient astronomical almanac is advised in PPP.
JIANG Zhenwei,YUAN Yunbin,OU Jikun et al. Research on Different Coordinates of Sun and Moon Influence on
GNSS System Errors Correction[J]. jgg, 2015, 35(2): 199-202.
