Accuracy Improvement by Boundary Conditions for Inertial Navigation

Table 1

Comparison of different methods computing object's velocity and position. “I“ stands for time-stepping, “II“ for FEM, and “III“ for FEM with sensor error modeling.

	Test 1			Test 2
Vel. error [m/s]	𝑡1	𝑡2	𝑡3	𝑡1	𝑡2	𝑡3
I	0.07	0.10	0.12	33.24	65.47	97.17
II	0.01	0.04	0.06	−0.67	0.50	1.15
III	0.04	0.05	0.04	0.33	0.54	0.44
Pos. error [m]	𝑡1	𝑡2	𝑡3	𝑡1	𝑡2	𝑡3
I	0.10	0.49	1.00	510.96	1992.99	4434.70
II	−0.31	−0.29	−0.15	−42.34	−43.42	−16.59
III	−0.10	−0.07	−0.05	−6.78	−4.72	−0.61