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Guidance law for mimicking short-range ballistic trajectories

Sharma, Yash Raj and Ratnoo, Ashwini (2019) Guidance law for mimicking short-range ballistic trajectories. In: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 233 (11). pp. 4176-4190.

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Official URL: https://dx.doi.org/10.1177/0954410018817424

Abstract

This paper considers the problem of mimicking short-range ballistic trajectories and presents a feedback guidance law addressing that. Analysis of the ideal ballistic trajectory is carried out and closed-form expressions are derived for the heading error and its derivative. Satisfying the launch angle, the impact angle, and the initial heading error rate of the ballistic trajectory, a guidance law is proposed using bearings-only information of the impact point. Analysis of the proposed guidance law is carried out evaluating the variation in guidance gains, the maximum look-angle, and the capturability. Analyzing the time-varying effective navigation gain, boundedness of the lateral acceleration is also ascertained. Simulations are carried out mimicking the ideal and realistic ballistic trajectories. Robustness of the proposed guidance method is verified against wind disturbances and error in modeling drag coefficient.

Item Type: Journal Article
Additional Information: copyright for this article belongs to SAGE PUBLICATIONS LTD
Keywords: Trajectory shaping guidance; short-range ballistic trajectories; guidance laws; impact angle control; guidance with bearings information
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 17 Sep 2019 07:54
Last Modified: 17 Sep 2019 07:54
URI: http://eprints.iisc.ac.in/id/eprint/63556

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