A Method for Line of Sight Angle Rate Reconstruction Based on Strapdown Seeker
- DOI
- 10.2991/meic-14.2014.147How to use a DOI?
- Keywords
- Strapdown Seeker; LOS Rate Reconstruction;Central Difference Kalman filter; Fading Memory Filter
- Abstract
The line of sight (LOS) information which detected by strapdown seeker is coupled with missile attitude information. On the other hand, since the instantaneous field of view is wider, the noise levels of strapdown seeker are higher than those of conventional gimbals seeker. According to the relationship among coordinates which are used to describe motion of missile, analysis of the attitude decoupling algorithm was deduced in detail. Based on the proposed algorithm, the LOS reconstruction filter was designed to obtain more precise line of sight angle, where, the theory of Central Difference Kalman Filter(CDKF) which based on Central Difference (CD) method was applied to solved the filtering problem of nonlinear system. Compared with EKF, the solving of Jacobi matrix can be avoided and only one adjustable parameter h was introduced which leads to a reduction of the computational cost. Based on this, the algorithm was suitable for engineering application. The results of computer simulation confirmed the validity of the proposed inertial LOS reconstruction filter, which can be used to improve the accuracy of inertial LOS and LOS rate estimation. The method meanwhile can be used as a new method to estimate inertial LOS rate.
- Copyright
- © 2014, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Cong Nie AU - Ke Zhang AU - Pei Wang AU - Meibo Lv PY - 2014/11 DA - 2014/11 TI - A Method for Line of Sight Angle Rate Reconstruction Based on Strapdown Seeker BT - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering PB - Atlantis Press SP - 658 EP - 662 SN - 2352-5401 UR - https://doi.org/10.2991/meic-14.2014.147 DO - 10.2991/meic-14.2014.147 ID - Nie2014/11 ER -