Real-Time Trajectory Optimisation Models for Next Generation Air Traffic Management Systems

Abstract

This paper presents models and algorithms for real-time 4-Dimensional Flight Trajectory (4DT) operations in the next generation Communications, Navigation, Surveillance/Air Traffic Management (CNS/ATM) systems. In particular, the models are employed for multi-objective optimisation of 4DT intents in ground-based 4DT Planning, Negotiation and Validation (4-PNV) systems and in airborne Next Generation Flight Management Systems (NG-FMS). The assumed timeframe convention for offline and online air traffic operations is introduced and discussed. The adopted formulation of the multi-objective 4DT optimisation problem includes a number of environmental objectives and operational constraints. In particular, the paper describes a real-time multi-objective optimisation algorithm and the generalised expression of cost function adopted for penalties associated with specific airspace volumes, accounting for weather models, condensation trails models and noise models.

Trajectory optimisation for avionics-based GNSS integrity augmentation system

“… Investigate the potential of ABIA to enhance the performance of Next Generation Flight Management Systems (NG-FMS) for manned and unmanned aircraft [16].  Evaluate the potential of ABAS/ABIA techniques to enhance the performance of next generation CNS+A decision support tools for Performance/Intent Based Operations (PBO/IBO) and four dimensional trajectory management [17].  Investigate the potential of ABAS/ABIA concepts to support aviation forensic applications (i.e., accident and incident investigation).…”

Novel flight management system for improved safety and sustainability in the CNS+A context

“…The NG-FMS generates 4DT intents composed by groups of single trajectories t belonging to the global set T. A number of algorithms have been adopted for trajectory generation and avoidance manoeuvres [14][15][16][17]. The consecutive Trajectory Change Points (TCP) along the path are defined with respect to the previous waypoints by conditional probability and generate fly-by and fly-over waypoints for each flight segment up to the destination.…”

Opening Autonomous Airspace–a Prologue

“…A layered approach based on time-to-conflict seems logical so that the highest priority conflicts, those that will occur first, are mitigated, then followed by later predicted conflicts. When all air vehicles are equipped with the same decision logic, it should be very reasonable to predict safe, de-conflicted trajectories for more than two, converging air vehicles (Gardi Sabatini, Ramasamy & Kistan, 2014).…”