Abstract
A seventh-degree orthogonal simplified cubature Kalman filter algorithm (7th-SCQKF) is proposed for the initial alignment of a strapdown inertial navigation system (SINS). According to the simplified CKF theory, this paper introduces the improved seventh-order simplified CKF algorithm (7th-MSSRCKF), which improves the performance of the original seventh-degree simplified CKF (7th-SSRCKF). At the same time, on the basis of the 7th-SSRCKF and 7th-MSSRCKF, the 7th-SCQKF is proposed to improve the filtering accuracy. In the meantime, the seventh-degree simplified CQKF (7th-SCQKF) algorithm is applied to SINS's large misalignment angle initial alignment simulation. It is proved that the filtering accuracy of the 7th-SCQKF is higher than that of the 7th-MSSRCKF, which verifies the correctness and validity of the new algorithm.
| Translated title of the contribution | A seventh-degree simplified cqkf and its application in sins initial alignment of misalignment angle |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 905-912 |
| Number of pages | 8 |
| Journal | Yuhang Xuebao/Journal of Astronautics |
| Volume | 39 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 30 Aug 2018 |