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http://dx.doi.org/10.12941/jksiam.2015.19.271

GUIDANCE LAW FOR IMPACT TIME AND ANGLE CONTROL WITH CONTROL COMMAND RESHAPING  

LEE, JIN-IK (DEPARTMENT OF THE 1ST R&D INSTITUTE, AGENCY FOR DEFENSE DEVELOPMENT)
Publication Information
Journal of the Korean Society for Industrial and Applied Mathematics / v.19, no.3, 2015 , pp. 271-287 More about this Journal
Abstract
In this article, a more generalized form of the impact time and angle control guidance law is proposed based on the linear quadratic optimal control methodology. For the purpose on controlling an additional constraint such as the impact time, we introduce an additional state variable that is defined to be the jerk (acceleration rate). Additionally, in order to provide an additional degree of freedom in choosing the guidance gains, the performance index that minimizes the control energy weighted by an arbitrary order of time-to-go is considered in this work. First, the generalized form of the impact angle control guidance law with an additional term which is used for the impact time control is derived. And then, we also determine the additional term in order to achieve the desired impact time. Through numbers of numerical simulations, we investigate the superiority of the proposed guidance law compared to previous guidance laws. In addition, a salvo attack scenario with multiple missile systems is also demonstrated.
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