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Curvature Constrained Cubic Spline Impact Angle Guidance for Intercepting Stationary Targets

Dhabale, Ashwin and Ghose, Debasish (2018) Curvature Constrained Cubic Spline Impact Angle Guidance for Intercepting Stationary Targets. In: IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 54 (4). pp. 1750-1766.

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Official URL: http://dx.doi.org/10.1109/TAES.2018.2801396


In this paper, a cubic spline guidance law is proposed for intercepting a stationary target at a desired impact angle in surface-to-surface engagement scenarios. An inverse method is used, which represents the altitude as a cubic polynomial of the downrange. The paper addresses many shortcomings of earlier work in this area. In particular, an explicit guidance expression is derived, which makes the guidance law effective and accurate in the presence of disturbances and uncertainties. It is also shown that the guidance command can be obtained using a single cubic spline polynomial even for impact angles greater than and equal to pi/2, While resulting in substantial improvement in terms of lateral acceleration and length of the trajectory. The paper also obtains an analytically derived capture region. The proposed guidance law is conceptually simple, independent of time-to-go, computationally inexpensive, and does not need linearization.

Item Type: Journal Article
Additional Information: Copy right for this article belong to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 06 Sep 2018 15:45
Last Modified: 06 Sep 2018 15:45
URI: http://eprints.iisc.ac.in/id/eprint/60595

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