Analysis of Filtering Methods for Satellite Autonomous Orbit Determination Using Celestial and Geomagnetic Measurement : Table 5

Table 5: Comparison of computation cost.


Filter method	Theoretical value of computation cost		Simulation value of computation cost
Filter method	is full matrix	is diagonal matrix	Computation time per orbit of celestial OD system(s)	Computation time per orbit of geomagnetic OD system (s)

EKF			0.3	9.5

UKF			1.6	11.7

UPF (sample num = 20)			39.5	313.9