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Polynomial Guidance Law for Dual-Seeker Interceptors

Hirwani, V and Ratnoo, A and Krishna, Y (2022) Polynomial Guidance Law for Dual-Seeker Interceptors. In: Journal of Guidance, Control, and Dynamics, 45 (3). pp. 533-544.

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Official URL: https://doi.org/10.2514/1.G006291


A polynomial-based guidance law is proposed for interception of a stationary target by a dual-seeker interceptor. The guidance law governs the desired look-angle profile as a cubic polynomial of the range-to-go. The coefficients of the polynomial are obtained by satisfying the boundary conditions on the look angle, at the launch and impact points together with imposing the respective field-of-view constraints of the midcourse and terminal phase seekers. Analytical conditions are derived among design parameters to achieve a strictly decreasing look-angle variation with range. Further analysis is carried out showing that the guidance law achieves a reducing acceleration demand in the terminal phase as well as a zero acceleration demand at the impact point. Simulation results using constant speed as well as realistic interceptor models are presented to support the analytical results.

Item Type: Journal Article
Publication: Journal of Guidance, Control, and Dynamics
Publisher: AIAA International
Additional Information: The copyright for this article belongs to the AIAA International.
Keywords: Analytical conditions; Angle profile; Angle variation; Cubic polynomials; Design parameters; Field of views; Guidance laws; Impact point; Stationary targets; Terminal phasis, Polynomials
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 08 Jul 2022 09:24
Last Modified: 08 Jul 2022 09:24
URI: https://eprints.iisc.ac.in/id/eprint/74315

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