基于IMM_UKF的红外导弹滑模制导  

Slide Mode Guidance of Infrared Missile Based on IMM_UKF

作　　者：曾宪伟[1] 方洋旺[1] 王洪强[1] 陈晨[2] 

机构地区：[1]空军工程大学工程学院,西安710038 [2]中国人民解放军驻电子二十九所军事代表室,成都610041

出　　处：《宇航学报》2009年第4期1385-1389,共5页Journal of Astronautics

基　　金：国家自然科学基金(60674031);国家863基金(2007AA701405);总装预研重点基金项目(6140529)

摘　　要：针对红外空空导弹被动制导问题,将交互式多模型算法(IMM)和不敏滤波(UKF)算法结合起来估计目标状态,同时设计了滑模制导律来提高目标的可观性,从而提高导弹制导精度。仿真结果表明在同等可观性条件下,IMM_UKF较自适应两步滤波(ATSF)估计精度高,与滑模制导律结合起来提高了制导精度,减小了脱靶量。Aiming at tracking target problem of infrared air-to-air missile during the terminal guidance, it is presented to combine the interacting multi model algorithm and unscented Kalman filter to estimate the state of the target and to improve the observability of the target by designing slide model guidance law at the same time to promote the precision of the missile. Simulation shows that IMM_UKF is better than adaptive two-step filter （ATSF） under the same observability. And it is more precise to combine them and to decrease the undershoot.

关 键 词：交互式多模型 不敏滤波 滑模制导律 自适应两步滤波 

分 类 号：V448[航空宇航科学与技术—飞行器设计]