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Trajectory Shaping Using Line-of-Sight Angle Profile

Sharma, YR and Ratnoo, A (2019) Trajectory Shaping Using Line-of-Sight Angle Profile. In: 5th Indian Control Conference, ICC 2019, 9 January 2019 - 11 January 2019, Delhi, pp. 271-276.

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Official URL: https://doi.org/10.1109/INDIANCC.2019.8715579


Due to monotonic variation in line-of-sight angle, proportional navigation based trajectory shaping guidance laws can achieve limited approach angles against a stationary target. Addressing this, a guidance law that governs the line-of-sight angle as a quadratic polynomial of range is proposed. Satisfying boundary conditions on the line-of-sight angle at the launch and the impact point, the two unknown coefficients of the polynomial are obtained. The third coefficient is obtained by imposing an additional line-of-sight angle constraint at a prespecified range separation. Simulation results show the efficacy of the proposed method. With an explicit relation between the range and the line-of-sight angle, the proposed guidance method brings greater spatial control over the trajectory which can be used for imposing additional constraints as terrain/obstacle avoidance.

Item Type: Conference Paper
Publication: 2019 5th Indian Control Conference, ICC 2019 - Proceedings
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc
Keywords: Trajectories, Angle constraint; Monotonic variations; Proportional navigation; Quadratic polynomial; Spatial control; Stationary targets; Trajectory shaping; Unknown coefficients, Air navigation
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 27 Dec 2022 05:03
Last Modified: 27 Dec 2022 05:03
URI: https://eprints.iisc.ac.in/id/eprint/78569

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