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Simultaneous Trajectory Optimization for Adaptive Powered Descent
The powered descent phase is the terminal phase of the planetary descent and landing mission, where the required direction and magnitude of the...
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Landing site positioning and descent trajectory reconstruction of Tianwen-1 on Mars
Tianwen-1 (TW-1) is the first Chinese interplanetary mission to have accomplished orbiting, landing, and patrolling in a single exploration of Mars....
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Method for the Situational Terminal Control of a Descent Vehicle on a Skip-up Return Trajectory from the Moon
AbstractA method of situational adaptation is proposed to control the movement of the descent vehicle (DV), which, upon returning from the Moon,...
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Flight trajectory prediction enabled by time-frequency wavelet transform
Accurate flight trajectory prediction is a crucial and challenging task in air traffic control, especially for maneuver operations. Modern...
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Trajectory
Section III is focused on flight trajectory planning, execution, and monitoring, building on the air navigation fundamentals and air navigation...
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Analyze Accelerated Mirror Descent via High-Resolution ODEs
Mirror descent, which can be seen as generalization of gradient descent for solving constrained optimization problem, has found a variety...
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Analysis of Thermal Protection Using an Anisotropic Material During the Return Capsule Descent
AbstractThe article treats the descent of a stabilized spherical capsule to the Earth’s surface along the trajectory from near-lunar and low-Earth...
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Heritage culture and national identity trajectories: Relations to classroom cultural diversity climate and socioemotional adjustment for adolescents of immigrant descent
Adolescents’ heritage culture and national identities are potential developmental assets for socioemotional adjustment. The school context can...
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State space representation and phase analysis of gradient descent optimizers
Deep learning has achieved good results in the field of image recognition due to the key role of the optimizer in a deep learning network. In this...
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Vertical and Lateral Trajectory Coupling Method in 4D Trajectory Prediction
Four-dimension trajectory prediction is a critical technology for Trajectory-based operations (TBO). Accurate and reliable trajectory prediction...
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Mars Entry and Powered Descent Using Collaborative Optimization
This chapter employed reinforcement learning and hp-adaptive pseudospectral method to investigate the interplay between entry guidance and powered...
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Fractional Order Iteration for Gradient Descent Method Based on Event-Triggered Mechanism
In this work, a novel gradient descent method based on event-triggered strategy has been proposed, which involves integer and fractional order...
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Actor-critic objective penalty function method: an adaptive strategy for trajectory tracking in autonomous driving
Trajectory tracking is a key technology for controlling the autonomous vehicles effectively and stably to track the reference trajectory. How to...
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Derivation of Coordinate Descent Algorithms from Optimal Control Theory
Recently, it was posited that disparate optimization algorithms may be coalesced in terms of a central source emanating from optimal control theory....
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Analysis of the Flight Data on Convective and Radiative Heating of the Surface of Martian Schiaparelli Descent Space Vehicle
AbstractRadiative aerothermodynamics of the Schiaparelli descent space vehicle are investigated numerically at some characteristic trajectory points...
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Conformal mirror descent with logarithmic divergences
The logarithmic divergence is an extension of the Bregman divergence motivated by optimal transport and a generalized convex duality, and satisfies...
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Analysing the benefits of trajectory deviations for planar trajectory optimisation
Aircraft traverse airspace sectors under the supervision of Air Traffic Controllers by following navigation points. The trajectories can deviate from...
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Analysis of Flight Trajectory Model Based on BADA
The aircraft trajectory model is a fundamental constraint of aircraft trajectory planning. An appropriate trajectory model can make trajectory...
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Explicit Near-Optimal Guidance and Pulse-Modulated Control for Lunar Descent and Touchdown
This research considers the descent path of a space vehicle, from periselenium of its operational orbit to the lunar surface. The trajectory is split...
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Trajectory Optimization for Manipulation Considering Grasp Selection and Adjustment
Generating motions to grasp the objects in the scene is critical in robotic manipulation. The feasibility and quality of the output trajectory are...