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- W2331541625 abstract "Aircraft trajectories must often be computed in rapid time, particularly if trajectories close to terrain are to be flown without radar detection. Furthermore, collision avoidance strategies for complex three-dimensional terrain must be computed quickly if the aircraft is to safely maneuver past the obstacle. In this paper, an approach for computing such trajectories near arbitrary three-dimensional terrain is presented. The approach relies on the application of the Legendre pseudospectral method with analytic derivatives for the aircraft performance parameters and terrain. A nonlinear point mass aircraft model is used to generate optimal trajectories using a weighted cost that combines minimum altitude with minimum flight-path/heading angle rates, and minimum aircraft acceleration. To simulate the optimal trajectories, a six-degree-of-freedom aircraft model is used. The outer-loop trajectories are transformed into appropriate inner-loop trajectories and actuator inputs. The inner-loop is tracked via a linear receding horizon strategy using state feedback with terminal state constraints." @default.
- W2331541625 created "2016-06-24" @default.
- W2331541625 creator A5049202666 @default.
- W2331541625 date "2006-06-15" @default.
- W2331541625 modified "2023-09-23" @default.
- W2331541625 title "Real-Time Computation of Optimal Three-Dimensional Aircraft Trajectories Including Terrain-Following" @default.
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- W2331541625 doi "https://doi.org/10.2514/6.2006-6603" @default.
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