Aircraft Trajectory Modeling and Altering Algorithm Verification
نویسندگان
چکیده
The Airborne Information for Lateral Spacing (AILS) program at NASA Langley Research Center aims at giving pilots the information necessary to make independent approaches to parallel runways with spacing down to 2500 feet in Instrument Meteorological Conditions. The AILS concept consists of accurate tra c information visible at the navigation display and an alerting algorithm which warns the crew when one of the aircraft involved in a parallel landing is diverting from the intended ight path. In this paper we present a model of aircraft approaches to parallel runways. Based on this model, we analyze the alerting algorithm with the objective of verifying its correctness. The formalization is conducted in the general veri cation system PVS.
منابع مشابه
Aircraft Trajectory Modeling and Alerting Algorithm Verification
The Airborne Information for Lateral Spacing (AILS) program at NASA Langley Research Center aims at giving pilots the information necessary to make independent approaches to parallel runways with spacing down to 2500 feet in Instrument Meteorological Conditions. The AILS concept consists of accurate tra c information visible at the navigation display and an alerting algorithm which warns the cr...
متن کاملDesigning and Modeling a Control System for Aircraft in the Presence of Wind Disturbance (TECHNICAL NOTE)
This paper proposes a switching adaptive control for trajectory tracking of unmanned aircraft systems. The switching adaptive control method is designed to overcome the wind disturbance and achieve a proper tracking performance for control systems. In the suggested system, the wind disturbance is regarded as a finite set of uncertainties; a controller is designed for each uncertainty, and a per...
متن کاملNumerical and Neural Network Modeling and control of an Aircraft Propeller
In this paper, parametric and numerical model of the DC motor, connected to aircraft propellers are extracted. This model is required for controlling trust and velocity of the propellers, and consequently, an aircraft. As a result, both of torque and speed of the propeller can be controlled simultaneously which increases the kinematic and kinetic performance of the aircraft. Parametric model of...
متن کاملA Formally Verified Conflict Detection Algorithm for Polynomial Trajectories
In air traffic management, conflict detection algorithms are used to determine whether or not aircraft are predicted to lose horizontal and vertical separation minima within a time interval assuming a trajectory model. In the case of linear trajectories, conflict detection algorithms have been proposed that are both complete, i.e., they detect all conflicts, and sound, i.e., they do not present...
متن کاملDiscrete Time Stochastic Hybrid Dynamic Games: Part I - Formulation & Applications
We formulate a framework for discrete time stochastic hybrid dynamic game with two players and consider the reach-avoid problem, i.e. finding the probability that the system trajectory starting from any initial condition enters a target set while avoiding the obstacle set in a given time-horizon. We formulate the reach-avoid problem as a zero-sum stochastic game and show that the verification a...
متن کامل