Table 5:
Comparison of computation cost.
Filter
method
Theoretical value of computation cost
Simulation value of computation cost
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