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

作　　者：LI Yue HE Lei XIA Qunli 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China [2]Sichuan Institute of Aerospace Systems Engineering,Chengdu 610100,China

出　　处：《Journal of Systems Engineering and Electronics》2021年第1期178-196,共19页系统工程与电子技术（英文版）

基　　金：supported by the Key Laboratory of Defense Science and Technology Foundation of Luoyang Electro-optical Equipment Research Institute(6142504200108)。

摘　　要：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 rollpitch seeker under the anti-infrared decoy state is effective.

关 键 词：line-of-sight(LOS)rate extraction roll-pitch seeker anti-infrared decoy Kalman filter target maneuver 

分 类 号：TJ765.333[兵器科学与技术—武器系统与运用工程] TN219[电子电信—物理电子学]