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논문 기본 정보

자료유형
학술저널
저자정보
YONG-IN LEE (AGENCY FOR DEFENSE DEVELOPMENT)
저널정보
한국산업응용수학회 JOURNAL OF THE KOREAN SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS Journal of the Korean Society for Industrial and Applied Mathematics Vol.19 No.3
발행연도
2015.9
수록면
327 - 364 (38page)

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초록· 키워드

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In this paper, a generalized guidance law with an arbitrary pair of guidance coefficients for impact angle control is proposed. Under the assumptions of a stationary target and a lag-free missile with constant speed, necessary conditions for the guidance coefficients to satisfy the required terminal constraints are obtained by deriving an explicit closed-form solution. Moreover, optimality of the generalized impact-angle control guidance law is discussed. By solving an inverse optimal control problem for the guidance law, it is found that the generalized guidance law can minimize a certain quadratic performance index. Finally, analytic solutions of the generalized guidance law for a first-order lag system are investigated. By solving a third-order linear time-varying ordinary differential equation, the blowing-up phenomenon of the guidance loop as the missile approaches the target is mathematically proved. Moreover, it is found that terminal misses due to the system lag are expressed in terms of the guidance coefficients, homing geometry, and the ratio of time-to-go to system time constant.

목차

ABSTRACT
1. INTRODUCTION
2. GENERALIZED IMPACT-ANGLE-CONTROL GUIDANCE LAW
3. OPTIMALITY OF GENERALIZED GUIDANCE LAW
4. ANALYTIC SOLUTIONS OF GENERALIZED GUIDANCE LAW FOR SINGLE LAG SYSTEM
5. CONCLUSION
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