TY - GEN
T1 - Estimation Method Based on EKF for Radome Error Slope
AU - Xiao, Yao
AU - Chen, Xu
AU - Yang, Lingyu
AU - Zhang, Jing
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - Aiming at the problem that radome error of the radar-homing missile produces line-of-sight angle measurement error and affects the stability of the guidance system during flight, this paper establishes seeker servo control system model and analyzes the angle relation under radome error in pitch plane. Then, for the convenience of theoretical analysis, a simplified seeker model is established with the low-order equivalent fitting method, which has the same characteristics as seeker servo control system and reduces the model order significantly. Finally, based on the low-order simplified seeker model, this paper establishes the system equation between line-of-sight angle and angular velocity. Taking radome error slope as the state and line-of-sight angular velocity as measurement, an EKF is established to estimate the radome error slope. The results show that the EKF can accurately estimate radome error slope in many forms, and it can be used in the guidance system for radome error compensation in the future.
AB - Aiming at the problem that radome error of the radar-homing missile produces line-of-sight angle measurement error and affects the stability of the guidance system during flight, this paper establishes seeker servo control system model and analyzes the angle relation under radome error in pitch plane. Then, for the convenience of theoretical analysis, a simplified seeker model is established with the low-order equivalent fitting method, which has the same characteristics as seeker servo control system and reduces the model order significantly. Finally, based on the low-order simplified seeker model, this paper establishes the system equation between line-of-sight angle and angular velocity. Taking radome error slope as the state and line-of-sight angular velocity as measurement, an EKF is established to estimate the radome error slope. The results show that the EKF can accurately estimate radome error slope in many forms, and it can be used in the guidance system for radome error compensation in the future.
KW - EKF
KW - Low-order equivalent system
KW - Radome error slope
UR - https://www.scopus.com/pages/publications/85151140327
U2 - 10.1007/978-981-19-6613-2_372
DO - 10.1007/978-981-19-6613-2_372
M3 - 会议稿件
AN - SCOPUS:85151140327
SN - 9789811966125
T3 - Lecture Notes in Electrical Engineering
SP - 3827
EP - 3836
BT - Advances in Guidance, Navigation and Control - Proceedings of 2022 International Conference on Guidance, Navigation and Control
A2 - Yan, Liang
A2 - Duan, Haibin
A2 - Deng, Yimin
A2 - Yan, Liang
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Conference on Guidance, Navigation and Control, ICGNC 2022
Y2 - 5 August 2022 through 7 August 2022
ER -