TY - GEN
T1 - The design of LOS reconstruction filter for strap-down imaging seeker
AU - Lin, Zhe
AU - Yao, Yu
AU - Ma, Ke Mao
PY - 2005
Y1 - 2005
N2 - In this paper, the methods of line-of-sight (LOS) and LOS rate reconstruction in strap-down imaging seeker system are investigated. A LOS reconstruction filter for strap-down seeker is proposed. An exact LOS dynamic model of strap-down seeker is constructed by applying fully the output information of rate gyro and measurement information of the seeker. Compared with conventional LOS dynamic models, the relative distance and its rate between the missile and its target, which are unobservable to imaging seekers, together with the unknown maneuver models of the target are unnecessary. As a result, the model is convenient to use. Based the proposed model, the reconstruction filter is designed to obtain more precise LOS angle, where the theory of Unscented Transformation (UT) and Unscented Kalman Filter (UKF) is applied to treat the nonlinearity in the proposed model. The results of computer simulations justify the validity of the LOS reconstruction filter, which can be used to improve the accuracy of LOS rate estimation.
AB - In this paper, the methods of line-of-sight (LOS) and LOS rate reconstruction in strap-down imaging seeker system are investigated. A LOS reconstruction filter for strap-down seeker is proposed. An exact LOS dynamic model of strap-down seeker is constructed by applying fully the output information of rate gyro and measurement information of the seeker. Compared with conventional LOS dynamic models, the relative distance and its rate between the missile and its target, which are unobservable to imaging seekers, together with the unknown maneuver models of the target are unnecessary. As a result, the model is convenient to use. Based the proposed model, the reconstruction filter is designed to obtain more precise LOS angle, where the theory of Unscented Transformation (UT) and Unscented Kalman Filter (UKF) is applied to treat the nonlinearity in the proposed model. The results of computer simulations justify the validity of the LOS reconstruction filter, which can be used to improve the accuracy of LOS rate estimation.
KW - LOS rate estimation
KW - LOS reconstruction
KW - Strap-down imaging seeker
KW - Unscented Kalman filter
KW - Unscented Transform
UR - https://www.scopus.com/pages/publications/28444468101
M3 - 会议稿件
AN - SCOPUS:28444468101
SN - 078039092X
SN - 9780780390928
T3 - 2005 International Conference on Machine Learning and Cybernetics, ICMLC 2005
SP - 2272
EP - 2277
BT - 2005 International Conference on Machine Learning and Cybernetics, ICMLC 2005
T2 - International Conference on Machine Learning and Cybernetics, ICMLC 2005
Y2 - 18 August 2005 through 21 August 2005
ER -