Precise Orbit Determination of BDS MEO Satellites Based on Satellite TT&C Stations

Table 1

BDS wavelength and the observation precision of each carrier signal.

Carrier signal	B1	B2	B3
Wavelength	19.2 cm	24.8 cm	23.6 cm
Phase noise	0.192 cm	0.248 cm	0.236 cm
Multipath error	4.8 cm	6.2 cm	5.9 cm
GEO/IGSO orbit error	2 dm
GEO/IGSO clock error	2 ns