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

Table 2

BDS multifrequency combination observation and their properties.

Carrier signal	Combination	Combination coefficient						Combination frequency/MHz	Combination wavelength/m	Combination phase noise/m
		B2-B3	EWL										61.38	4.884	0.069
B1-B2-B3	WL							231.198	1.297	0.032
B1-B3	WL							292.578	1.025	0.014
B1-B2-B3	WL							415.338	0.722	0.018
B1-B2-B3	WL							476.718	0.629	0.023
B1-B2-B3	WL							523.776	0.573	0.021