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Capturability of 3D RTPN guidance law against true-arbitrarily maneuvering target with maneuverability limitation

Chinese Journal of Aeronautics 2022年第7期35卷 75-90页

作者： Kebo LI Zhihui BAI Hyo-Sang SHIN Antonios TSOURDOS Min-Jea TAHK Department of Applied Mechanics College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China Institute of Aerospace Sciences SATMCranfield UniversityCranfield MK430ALUK Department of Aerospace Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea

The capturability of the Three-Dimensional(3D)Realistic true Proportional Navigation(RTPN)guidance law is thoroughly *** true-arbitrarily maneuvering target is considered,which maneuvers along an arbitrary direction in 3D space with an arbitrary but upperbounded *** whole nonlinear relative kinematics between the interceptor and target is taken into ***,the upper-bound of commanded acceleration of 3D RTPN is deduced,using a novel Lyapunov-like ***,the reasonable selection range of navigation gain of3D RTPN is analyzed,when the maneuver limitation of interceptor is *** that,a more realistic definition of capture is adopted,i.e.,the relative range is smaller than an acceptable miss-distance while the approaching speed is larger than a required impact *** previous researches which present Two-Dimensional(2D)capture regions,the inequality analysis technique is utilized to obtain the 3D capture region,where the three coordinates are the closing speed,transversal relative speed,and relative *** obtained capture region could be taken as a sufficient-but-unnecessary condition of *** new theoretical findings are all given in explicit expressions and are more general than previous results.

关键词： Capture region Lyapunov-like approach Maneuverability Limitation Realistic true proportional navigation true-arbitrarily maneuvering target

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Performance of 3D TPN against true-arbitrarily maneuvering target for exoatmospheric interception

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Science China(Technological Sciences) 2018年第8期61卷 1161-1174页

作者： LI KeBo LIANG YanGang SU WenShan CHEN Lei College of Aerospace Science and Engineering National University of Defense Technology National Innovation Institute of Defense Technology Academy of Military Science

true proportional navigation(TPN) guidance law is widely used for exoatmospheric interception, for its robustness and ease of implementation. The performance of TPN against nonmaneuvering target or the maneuvering target with a specific acceleration had been analyzed before. However, the obtained results are not suitable for the realistic exoatmospheric interception scenario,since the target may maneuver along an arbitrary direction with an arbitrary but upper-bounded acceleration in the threedimensional(3 D) space, which is the so-called "true-arbitrarily maneuvering target" in this paper. With the help of the line-ofsight(LOS) rotation coordinate system, the performance of 3 D TPN against the true-arbitrarily maneuvering target is thoroughly analyzed using the Lyapunov-like approach. The upper-bound of the 3 D LOS rate is obtained, and so is that of the commanded acceleration of 3 D TPN. After that, the capture region of 3 D TPN is presented on the initial relative velocity plane. The nonlinear3 D relative kinematics between the interceptor and the target is taken into full account. Finally, the new theoretical findings are demonstrated by numerical simulations.

关键词： exoatmospheric interception 3D TPN true-arbitrarily maneuvering target capturability Lyapunov-like approach

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