Analysis of Filtering Methods for Satellite Autonomous Orbit Determination Using Celestial and Geomagnetic Measurement

Table 3

Performance of celestial OD system under different noise distributions.

Noise distribution		RMS (after convergence)		Maximum (after convergence)
		Position error/m	Velocity error/m/s	Position error/m	Velocity error/m/s
Normal; distribution	EKF	271.640953	0.287641	703.000581	0.613708
	UKF	245.939302	0.219864	593.829098	0.563749
	UPF	245.229683	0.219566	593.802048	0.563396
Student’s t distribution	EKF	387.618044	0.411669	827.358300	0.972190
	UKF	257.104360	0.261611	604.325265	0.664447
	UPF	246.294197	0.250511	587.154229	0.639735
Uniform; distribution	EKF	385.803609	0.398842	994.714264	0.902353
	UKF	350.079516	0.339869	888.790677	0.788940
	UPF	349.537325	0.338473	880.417206	0.782641