Performance Trades for Multiantenna GNSS Multisensor Attitude Determination Systems

Table 2

Sensor error source Monte Carlo simulation distribution parameters, same as in [16].

Error sources	Model parameters	Notes
Thermal noise	,	Linear scale factor randomly selected between 0 and 1
Multipath	1.0 intensity: ,	Linear scale factor randomly selected between 0 and 2
Tropospheric delay	Percent of error assumed handled by broadcast correction	Modified Hopfield with linear scale factor randomly selected between 0.95 and 1.05
Ionospheric delay	First-order ionospheric effects mitigated with dual frequency	Linear scale factor randomly selected between 0.7 and 1
Carrier phase break	Likelihood set to 1 phase break per 24 minutes to 1 phase break per 240 minutes
Gyroscope	In-run bias ,	Scaled Honeywell HG1700AG72 SF = (, , )
Sun sensor	Zenith measurement noise	Scaled solar MEMS ISSDX-60 SF = (1, 2, 3, 4)
Magnetometer	Measurement noise; terms scaled between 0.005 and 0.01; terms scaled between 25 nT and 50 nT	ST LSM9DS0