Error Analysis and Compensation of Gyrocompass Alignment for SINS on Moving Base

Table 4

Statistics of 4 methods.

		Method 1	Method 2	Method 3	Method 4
Roll error (′)	Mean	0.0316	0.0314	0.0313	0.0313
	Variance	−0.1623	−0.1618	−0.1636	−0.1636
Pitch error (′)	Mean	0.0646	0.0646	0.0645	0.0645
	Variance	0.1107	0.1109	0.1105	0.1105
Yaw error (°)	Mean	−1.4517	−0.3507	−0.1327	−0.1327
	Variance	0.3149	0.1791	0.1079	0.1079
Alignment time (s)		700	700	1400	650