Adaptive Terminal Guidance for Hypervelocity Impact in Specified Direction

The problem of guiding a hypersonic gliding vehicle in the terminal phase to a target location is considered. In addition to the constraints on its final position coordinates, the vehicle must also impact the target from a specified direction with very high precision. The proposed three-dimensional...

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Bibliographic Details
Published in:Journal of guidance, control, and dynamics control, and dynamics, 2006-03, Vol.29 (2), p.269-278
Main Authors: Lu, Ping, Doman, David B, Schierman, John D
Format: Article
Language:English
Subjects:
Accuracy
Adaptation
Applied sciences
Approximation
Computer science
control theory
systems
Control system analysis
Control theory. Systems
Exact sciences and technology
Hypervelocity impact
Terminal guidance
Velocity
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Summary:The problem of guiding a hypersonic gliding vehicle in the terminal phase to a target location is considered. In addition to the constraints on its final position coordinates, the vehicle must also impact the target from a specified direction with very high precision. The proposed three-dimensional guidance laws take simple proportional forms. The analysis establishes that with appropriately selected guidance parameters the three-dimensional guided trajectory will satisfy these impact requirements. We provide the conditions for the initial online selection of the guidance law parameters for the given impact direction requirement. The vehicle dynamics are explicitly taken into account in the realization of guidance commands. To ensure high accuracy in the impact angle conditions in an operational environment, we develop closed-loop nonlinear adaptation laws for the guidance parameters. We present the complete guidance logic and associated analysis. Simulation results are provided to demonstrate the effectiveness and accuracy of the proposed terminal guidance approach.
ISSN:0731-5090
1533-3884
DOI:10.2514/1.14367