GNSS Reliability Testing in Signal-Degraded Scenario

Table 1

GPS/GLONASS differences.

	Parameter	GPS	GLONASS
Constellation	Number of SV	24 (expandable)	24
	Orbital planes	6	3
	Orbital altitude	20200 km	19100 km
	Orbit inclination	55°	64.8°
	Ground track period	1 sidereal day	8 sidereal days
	Layout	Asymmetric	Symmetric
Signal	Carrier frequencies (MHz)	1575.42; 1227.60	1602 + K*0.5625; 1246 + K*0.4375
	Ranging code frequencies (MHz)	C/A: 1.023; L2C: 1.023; P: 10.23; M: 10.23	C/A: 0.511; P: 5.11
	Multiple access schemes	CDMA	FDMA
	Broadcast ephemerides	Keplerian	ECEF
Reference	Datum	WGS84	PZ90.02
	Time scale	GPS time	GLONASS time