Table 2 Simulation parameters.
From: Enhanced gyrocompass performance with optimized static scheme in the presence of platform vibrations
Simulation parameters | Values | Simulation parameters | Values |
|---|---|---|---|
Earth rotation rate (ERR) | \(15.0410668^\circ /h\) | Reference azimuths | {0, 15, 30, . . ., 345} degrees |
Angle random walk (ARW) | \(8.00 \times 10^{ - 04} {}^\circ /\sqrt h\) | Noise level for environmental random noise | Standard deviation = 0.001 |
Bias instability | \(8.00 \times 10^{ - 03} {}^\circ /h\) | Noise level for positions with Platform vibrations | Standard deviation = 0.005 |
Rate random walk (RRW) | \(2.90 \times 10^{ - 02} {}^\circ /h/\sqrt h\) | Sampling time per position for the four-position scheme | 30Â s |
FOG output data rate | 400Â Hz | Sampling time per position for the eight-position scheme | {30 (equal), 15 (half), 20 (two-hirds)} seconds |
Latitude used | \(2^\circ { 55}{\prime} 22{\prime}{\prime}\) | Number of disturbed positions | {0, 1, 2, 3, 4} |
The cut-off frequency of the Butterworth filter | 100Â Hz | Â | Â |
