TY - GEN
T1 - Line-of-Sight Rate Estimation Based on Attitude Dynamics for Strap-down Seeker
AU - Yingchao, Xiao
AU - Jun, Zhou
AU - Bin, Zhao
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - Aiming at the problem that the strap-down seeker can not directly get the guidance information such as line-of-sight (LOS) angular rate, a novel LOS angular rate estimation algorithm based on attitude dynamics is proposed in this paper. Firstly, the LOS decoupling formula is derived based on the relationship of coordinate transformation. Then the state equation and observation equation are established by employing the attitude dynamics. Finally, the Unscented Kalman Filter (UKF) is utilized to estimate the LOS angular rate. Compared with the algorithm without using the attitude dynamics, simulation results imply that the estimation error of LOS elevation angle and azimuth angle is reduced to 74.8% and 75.8%, respectively, while the estimation error of LOS elevation angular rate and azimuth angular rate is reduced to 92% and 94%, respectively, which prove the effectiveness of the method.
AB - Aiming at the problem that the strap-down seeker can not directly get the guidance information such as line-of-sight (LOS) angular rate, a novel LOS angular rate estimation algorithm based on attitude dynamics is proposed in this paper. Firstly, the LOS decoupling formula is derived based on the relationship of coordinate transformation. Then the state equation and observation equation are established by employing the attitude dynamics. Finally, the Unscented Kalman Filter (UKF) is utilized to estimate the LOS angular rate. Compared with the algorithm without using the attitude dynamics, simulation results imply that the estimation error of LOS elevation angle and azimuth angle is reduced to 74.8% and 75.8%, respectively, while the estimation error of LOS elevation angular rate and azimuth angular rate is reduced to 92% and 94%, respectively, which prove the effectiveness of the method.
KW - Attitude Dynamics
KW - LOS Rate Estimation
KW - Strap-down Seeker
KW - Unscented Kalman Filter
UR - http://www.scopus.com/inward/record.url?scp=85073109773&partnerID=8YFLogxK
U2 - 10.1109/CCDC.2019.8832707
DO - 10.1109/CCDC.2019.8832707
M3 - 会议稿件
AN - SCOPUS:85073109773
T3 - Proceedings of the 31st Chinese Control and Decision Conference, CCDC 2019
SP - 2078
EP - 2083
BT - Proceedings of the 31st Chinese Control and Decision Conference, CCDC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 31st Chinese Control and Decision Conference, CCDC 2019
Y2 - 3 June 2019 through 5 June 2019
ER -