Journal of Systems Engineering and Electronics ›› 2021, Vol. 32 ›› Issue (1): 178-196.doi: 10.23919/JSEE.2021.000016

• CONTROL THEORY AND APPLICATION • Previous Articles     Next Articles

Line-of-sight rates extraction of roll-pitch seeker under anti-infrared decoy state

Yue LI1,*(), Lei HE2(), Qunli XIA1()   

  1. 1 School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
    2 Sichuan Institute of Aerospace Systems Engineering, Chengdu 610100, China
  • Received:2020-03-22 Online:2021-02-18 Published:2021-03-16
  • Contact: Yue LI E-mail:liyue627167955@163.com;qiuxh759@163.com;1010@bit.edu.cn
  • About author:|LI Yue was born in 1995. He received his B.E. degree from Beijing Institute of Technology in 2016. Currently, he is a doctoral student in the School of Aerospace Engineering, Beijing Institute of Technology. His main research interests include flight vehicle design, guidance and control. E-mail: liyue627167955@163.com||HE Lei was born in 1993. He received his master’s degree from Beijing Institute of Technology in 2019 and he is an engineer in Sichuan Institute of Aerospace Systems Engineering. His research interests are seeker and control technology. E-mail: qiuxh759@163.com||XIA Qunli was born in 1971. He received his B.E. degree in launcher design from Beijing Institute of Technology in 1993, and M.S. degree in flight mechanics from Beijing Institute of Technology in 1996. He received his Ph.D. degree in aircraft design from Beijing Institute of Technology in 1999. He is an adjunct professor in Beijing Institute of Technology. His research interests are control and guidance technology. E-mail: 1010@bit.edu.cn
  • Supported by:
    This work was supported by the Key Laboratory of Defense Science and Technology Foundation of Luoyang Electro-optical Equipment Research Institute (6142504200108)

Abstract:

In this paper, the method of extracting guidance information such as the line-of-sight (LOS) rates under the anti-infrared decoy state for the roll-pitch seeker is researched. Coordinate systems which are used to describe the angles transform are defined. The LOS angles reconstruction model of the roll-pitch seeker in inertial space is established. A Kalman filter model for extracting LOS rates of the roll-pitch seeker is proposed. In this model, the target performs constant acceleration (CA) model maneuvers. The error model of LOS rates extraction under infrared decoy state is established. Several existing methods of extracting LOS rates under anti-infrared decoy state are listed in this paper. Different from the existing methods, a novel method that uses extrapolated values of target accelerations as filter measurements is proposed to solve the guidance information extraction problem under the anti-infrared decoy state. Numerical simulations are conducted to verify the effectiveness of the proposed method under different target maneuvering models such as the CA model, the CA extended model and the singer model. The simulation results show that the proposed method of extracting guidance information such as LOS rates for the roll-pitch seeker under the anti-infrared decoy state is effective.

Key words: line-of-sight (LOS) rate extraction, roll-pitch seeker, anti-infrared decoy, Kalman filter, target maneuver