Abstract
In order to avoid the nonlinear problem of error model caused by the initial level misalignment, preliminary leveling operation is necessary for traditional gyrocompass alignment. However, due to the exist of preliminary leveling operation, the total alignment time will be lengthened. For the purpose of reducing alignment time, a novel gyrocompass alignment method is proposed in this paper. This method is accomplished by utilizing the different error propagation characteristics of two different level alignment algorithms, and the procedure of azimuth alignment is performed by opening the azimuth loop. So preliminary leveling operation can be removed and the duration of initial alignment can be shortened. Simulation results show that the alignment speed of novel gyrocompass alignment method is faster than that of the traditional one.
| Original language | English |
|---|---|
| Pages (from-to) | 1719-1727 |
| Number of pages | 9 |
| Journal | Journal of Computational Information Systems |
| Volume | 11 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Mar 2015 |
| Externally published | Yes |
Keywords
- Error model
- Gyrocompass alignment
- Nonlinear problem
- Style strapdown inertial navigation system
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