Abstract
For a strap-down inertial navigation system, the coning error compensation accuracy will be decreased and its real time capability will be worse, when using the angular velocity according to the traditional method. In order to solve this problem, a new algorithm was proposed by using the angular velocity directly without obtaining the angular increment from the angular velocity through Simpson formula or trapezoid formula. Moreover, the four-sample rotation vector algorithm was derived, and the mechanism of the coning error was given. At last, the simulation results of the proposed algorithm and the theoretical one were compared.
| Original language | English |
|---|---|
| Pages (from-to) | 15-20 |
| Number of pages | 6 |
| Journal | Chinese Space Science and Technology |
| Volume | 32 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 2012 |
Keywords
- Attitude updating
- Coning error
- Equivalent rotation vector
- Spacecraft
- Strap-down inertial navigation system
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