scholarly journals Algorithms for aircraft track optimization in flexible routing

2019 ◽  
Vol 30 ◽  
pp. 03003
Author(s):  
Oleg N. Skrypnik ◽  
Evgenii E. Netchaev ◽  
Natalya G. Arefyeva ◽  
Roman O. Arefyev
Keyword(s):  
Traffic Management ◽  
Air Traffic Management ◽  
Flight Path ◽  
Navigation Systems ◽  
Field Variation ◽  
Geometric Dilution Of Precision ◽  
Satellite Navigation Systems ◽  
The Cost ◽  
Theory Of Graphs ◽  
Flexible Routing

The authors consider the problem of optimization of aircraft flight tracks in air traffic management (ATM) on basis of flexible routing technologies which involve the use of satellite navigation systems (SNS). It is shown that in optimizing a trajectory it is necessary to take into account the accuracy of track holding in flight which depends on accuracy of the navigation system and external flight path disturbances, e.g. wind. For solving the problem of optimization the authors propose to use the theory of graphs. The technique of constructing a dynamic SNS accuracy field and representing it as a graph was developed. It is proposed that the SNS field could be characterized by geometric dilution of precision changing both in space and in time. Based on the theory of graphs (A-star algorithm) the technique of constructing a trajectory of optimal length under conditions of SNS accuracy variations and external flight path disturbances is proposed. The criterion of optimization based on minimizing the true track is offered. The cost function taking into account the track holding accuracy in navigating by SNS and effects of external flight disturbances is justified. The article represents the results of A-star algorithm application for optimal flight track construction under conditions of SNS accuracy field variation and presence of prohibited zones in the provide zone of airspace

scholarly journals Optimization of an aircraft flight trajectory in the GLONASS dynamic accuracy field

2019 ◽  
Vol 22 (5) ◽  
pp. 19-31
Author(s):  
O. N. Skrypnik ◽  
E. E. Nechaev ◽  
N. G. Arefyeva ◽  
R. O. Arefyev
Keyword(s):  
Traffic Management ◽  
Flight Path ◽  
Navigation Systems ◽  
Field Variation ◽  
Flight Trajectory ◽  
Aircraft Flight ◽  
Geometric Dilution Of Precision ◽  
Satellite Navigation Systems ◽  
The Cost ◽  
Theory Of Graphs

The authors consider the problem of optimization of aircraft flight trajectories in air traffic management (ATM) on the basis of flexible routing technologies which involve the use of satellite navigation systems (SNS). It is shown that in optimizing a trajectory it is necessary to take into account the accuracy of track holding during the flight which depends on the accuracy of the navigation system and external flight path disturbances, e.g. wind. For solving the task of optimization the authors propose to use the theory of graphs. The technique of constructing a dynamic SNS accuracy field and representing it as a graph was developed. It is proposed that the SNS field be characterized by geometric dilution of precision changing both in space and in time. Based on the theory of graphs (A-star algorithm) the technique of constructing a trajectory of optimal length with changing the SNS accuracy and external flight path disturbances is proposed. The criterion of optimization based on minimizing the true track is offered. The cost function taking into account the track holding accuracy in navigating by SNS and effects of external flight disturbances is justified. The article presents the results of A-star algorithm application for constructing an optimal flight trajectory under conditions of SNS accuracy field variation and presence of prohibited zones in the provided airspace.

Airport Surface Movement – Critical Analysis of Navigation System Performance Requirements

2011 ◽  
Vol 64 (2) ◽  
pp. 281-294 ◽  
Author(s):  
Wolfgang Schuster ◽  
Washington Ochieng
Keyword(s):  
Traffic Management ◽  
Critical Analysis ◽  
Air Traffic Management ◽  
Air Travel ◽  
Navigation Systems ◽  
Surface Movement ◽  
Performance Requirements ◽  
Flight Profile ◽  
Increasing Demand ◽  
Satellite Navigation Systems

The CNS/ATM concept envisages reliance on global satellite navigation systems to underpin future air traffic management that is able to cope with the ever-increasing demand for air travel without jeopardising safety and the environment. In order to benefit from GNSS, it is crucial that the navigation performance required of air navigation systems is derived and agreed, based on sound principles. Significant work has been undertaken to date and agreement reached on the navigation requirements for the phases of flight up to Category I (CAT-I) precision approach, and proposals are under discussion for CAT-III precision approach. This paper completes a typical flight profile by addressing airport surface movement, and proposing the requirements based on operational requirements for each airport category, to support operations in zero visibility conditions. The benefits of the approach taken in the derivation of the requirements are discussed relative to the existing navigation requirements.

Radio engineering support of aircraft flights and aviation telecommunications

2021 ◽  
Author(s):  
Sergey Kudryakov ◽  
Valeriy Kul'chickiy ◽  
Nikolay Povarenkin ◽  
Viktor Ponomarev ◽  
Evgeniy Rubcov ◽  
...  
Keyword(s):  
Traffic Management ◽  
Air Traffic Management ◽  
Self Control ◽  
Training Manual ◽  
Navigation Systems ◽  
Master's Program ◽  
Radio Engineering ◽  
Aircraft Flight ◽  
Satellite Navigation Systems ◽  
Radio Beacon

The training manual describes the basics of radio engineering support for flights, the organization of radio engineering support for flights, and the general characteristics of flight support equipment. Information is provided about drive radios, marker beacons, radio beacon landing systems, automatic direction finders, RSBN system, VOR and DME beacons, satellite navigation systems, as well as radar surveillance equipment. The basics of telecommunications, issues of aviation telecommunications, as well as information about the means of aviation telecommunications are presented. There are questions for self-control. It is intended for students studying under the specialty program in the specialty 25.05.05 "Aircraft operation and air traffic management"; for students studying under the bachelor's program in the direction of training 25.03.04 "Airport operation and aircraft flight support", as well as for students studying under the master's program in the direction 25.04.04 "Airport Operation and aircraft flight support".

Lateral leveling technology at setting railway tracks in the design position

2020 ◽  
Vol 962 (8) ◽  
pp. 18-23
Author(s):  
V.V. Scherbakov ◽  
A.P. Karpik ◽  
I.V. Scherbakov ◽  
M.N. Barsuk
Keyword(s):  
Control System ◽  
Mobile Communications ◽  
Human Factor ◽  
Railway Track ◽  
Precision Measurements ◽  
Navigation Systems ◽  
Automated Control ◽  
Automated Control System ◽  
Satellite Navigation Systems ◽  
The Cost

The automation of the lateral leveling method at constructing and repairing railways is covered in the article. The essence of this method is comparing the design distances between the axes of the repaired and the adjacent track having a given step (leveling plot) with the actual data obtained from the leveling rail and using the control system of the lifting-and-leveling device to offset the path to the design value. At the same time, the disadvantages of this method are obvious – this is copying the bumps of the adjacent track to that being at repair. Automation eliminates the disadvantages of the existing technology for setting the railway track into the design position using lateral leveling. The authors show the schematic diagram and device of the automated control system ACS-3D for setting the path into the design position, created with considering the exclusion of the "human factor" influence, a high automation degree and minimizing the cost of creating a digital project, as well as eliminating the need for mobile communications and that of high-precision measurements by global satellite navigation systems.

Planning of Future Satellite Navigation Systems

1999 ◽  
Vol 52 (1) ◽  
pp. 47-59 ◽  
Author(s):  
John Spiller ◽  
Tony Tapsell ◽  
Richard Peckham
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Cost Effective ◽  
Satellite Navigation ◽  
Wide Area ◽  
Navigation Systems ◽  
Gradual Evolution ◽  
Coverage Accuracy ◽  
Satellite Navigation Systems ◽  
The Cost

This paper is based on the results of the ‘GNSS Support Task’ study for the European Commission, DGXIII. It summarises the results of the cost benefit analysis in terms of coverage, accuracy and safety requirements for different types of user and describes the most cost-effective GNSS 2 architecture. These analyses also assume that the overall system is layered into wide area, regional and local systems. The future planning of satellite navigation is essentially driven by the wide area requirements and ensuring that these are global and seamless. There is some flexibility in coverage and accuracy for a wide area system in that it can be augmented regionally or locally if required, but it must provide the highest level of safety required. The paper approaches the architecture for a future navigation system from this safety aspect. An analysis of the chosen architecture shows that the required safety performance can be met. An implementation plan is described which allows a gradual evolution from the first system to be realized for safety critical operations to a fully civilian owned and operated system.

Framework to Assess an Area Control Centre's Operating Cost-efficiency: a Case Study

2015 ◽  
Vol 68 (6) ◽  
pp. 1088-1104
Author(s):  
Gonzalo Tobaruela ◽  
Wolfgang Schuster ◽  
Arnab Majumdar ◽  
Washington Y. Ochieng
Keyword(s):  
Cost Efficiency ◽  
Traffic Management ◽  
Planning Process ◽  
Operating Cost ◽  
Air Traffic Management ◽  
Air Traffic ◽  
Performance Area ◽  
The Cost

Cost-efficiency is a crucial Key Performance Area (KPA) in today's Air Traffic Management (ATM) system. Traditionally, research has mainly focused on the airport domain, with little attention being paid to the operating cost-efficiency of Area Control Centres (ACCs). This paper addresses this shortcoming and develops a framework to assess the cost-efficiency of an ACC from an operational perspective. It investigates how the resources of an ACC are managed, from the start of the planning process to the day of operation. The framework develops new metrics to assess an ACC's performance. A case study is carried out on the Maastricht Upper Area Control (MUAC) centre. Results show that, despite being one of the most advanced ACCs in Europe, the human workforce is operating at only approximately 50% of their full capabilities.

Safety Culture and Safety-Relevant Behavior in Air Traffic Management

2015 ◽  
Vol 5 (1) ◽  
pp. 3-17 ◽  
Author(s):  
Michaela Schwarz ◽  
K. Wolfgang Kallus
Keyword(s):  
Safety Culture ◽  
Traffic Management ◽  
Service Providers ◽  
Five Factor Model ◽  
Principal Component ◽  
Air Traffic Management ◽  
Air Traffic ◽  
Psychometric Validation ◽  
Safety Attitudes ◽  
Culture Development

Since 2010, air navigation service providers have been mandated to implement a positive and proactive safety culture based on shared beliefs, assumptions, and values regarding safety. This mandate raised the need to develop and validate a concept and tools to assess the level of safety culture in organizations. An initial set of 40 safety culture questions based on eight themes underwent psychometric validation. Principal component analysis was applied to data from 282 air traffic management staff, producing a five-factor model of informed culture, reporting and learning culture, just culture, and flexible culture, as well as management’s safety attitudes. This five-factor solution was validated across two different occupational groups and assessment dates (construct validity). Criterion validity was partly achieved by predicting safety-relevant behavior on the job through three out of five safety culture scores. Results indicated a nonlinear relationship with safety culture scales. Overall the proposed concept proved reliable and valid with respect to safety culture development, providing a robust foundation for managers, safety experts, and operational and safety researchers to measure and further improve the level of safety culture within the air traffic management context.

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