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Sun, J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
AUTOMATIC dependent surveillance–broadcast (ADS-B) [1,2] is widely implemented in modern commercial aircraft and will become mandatory equipment in 2020. Flight state information such as position, velocity, and vertical rate are broadcast by tens of thousands of aircraft around the world constantly using onboard ADS-B transponders. These data...
journal article 2017
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Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Maas, J.B. (author)
In the context of decentralized separation, airspace stability pertains to the propagation of con?ict chain reactions as a result of tactical con?ict resolution maneuvers. This notion of airspace stability has been used in previous literature to develop a semi-empirical method for determining the capacity of a decentralized direct-routing...
conference paper 2017
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van Ginkel, D.H. (author), van Bortel, G.A. (author), Hoekstra, J.S.C.M. (author)
report 2016
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Nijhuis, S. (author), Stolk, E.H. (author), Hoekstra, M.J. (author)
The Department of Urbanism at the Faculty of Architecture and Built Environment at the Delft University of Technology has a long tradition in educating generations of internationally oriented designers, planners and researchers in urbanism. Here the domain of urbanism is defined as an interdisciplinary approach that engages in real-world...
journal article 2016
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Dol, C.P. (author), Mazo, Estrella Cruz (author), Lambea Llop, N. (author), Hoekstra, J.S.C.M. (author), Cano Fuentes, G.I. (author), Etxarri, Aitziber Etxezarreta (author)
The Spanish home ownership sector has been hit hard by the economic crisis. Repossessions stand at around half a million in the period from 2008 to 2014. This article investigates how the authorities, both at the level of the Spanish state and of the autonomous communities (regions), have responded to this problem. We investigated whether...
journal article 2016
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Haffner, M.E.A. (author), Hoekstra, J.S.C.M. (author), Tang, C. (author), Oxley, M (author)
journal article 2016
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Pietra, F. (author), De Trizio, L. (author), Hoekstra, Anne W. (author), Renaud, N. (author), Prato, Mirko (author), Grozema, F.C. (author), Baesjou, Patrick J. (author), Koole, Rolf (author), Manna, L. (author), Houtepen, A.J. (author)
Colloidal quantum dots (QDs) show great promise as LED phosphors due to their tunable narrow-band emission and ability to produce high-quality white light. Currently, the most suitable QDs for lighting applications are based on cadmium, which presents a toxicity problem for consumer applications. The most promising cadmium-free candidate QDs...
journal article 2016
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Sunil, E. (author), Hoekstra, J.M. (author), Ellerbroek, J. (author), Bussink, F (author), Vidosavljevic, A (author), Nieuwenhuisen, D (author)
Airspace structure can be used as a procedural mechanism for a priori separation and organization of en-route air traffic. Although many studies have explored novel structuring methods to increase en-route airspace capacity, the relationship between the level of structuring of traffic and airspace capacity is not well established. To better...
conference paper 2016
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Maas, J.B. (author), Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)
Several conflict resolution algorithms for airborne self-separation rely on principles derived from the repulsive forces that exist between similarly charged particles. This research investigates whether the performance of the Modified Voltage Potential algorithm, which is based on this algorithm, can be improved using bio-inspired swarming...
conference paper 2016
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Langejan, T.P. (author), Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Most Free-Flight concepts rely on self-separation by means of airborne Conflict Detection and Resolution (CD&R) algorithms. A key enabling technology for airborne CD&R is the Automatic Dependent Surveillance-Broadcast (ADS-B) system, which is used for direct state information exchange between aircraft. Similar to other communication...
conference paper 2016
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Sunil, E. (author), Maas, J.B. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)
The work that is presented in this paper is part of an ongoing study on the relationship between structure and capacity of decentralized airspace concepts. In this paper, the effect of traffic stability, which considers the occurrence of conflict chain reactions as a result of conflict resolution maneuvers, on capacity is examined closely. Using...
conference paper 2016
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Sunil, E. (author), Hoekstra, J.M. (author), Ellerbroek, J. (author), Bussink, F (author), Vidosavljevic, A (author), Delhaye, D. (author), Nieuwenhuisen, D (author)
Airspace structure can be used as a procedural mechanism for a priori separation and organization of en-route air traffic. Although many studies have explored novel structuring methods to increase en-route airspace capacity, the relationship between the level of structuring of traffic and airspace capacity is not well established. To better...
conference paper 2016
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Hoekstra, J.M. (author), Ellerbroek, J. (author)
To advance ATM research as a science, ATM research results should be made more comparable. A possible way to do this is to share tools and data. This paper presents a project that investigates the feasibility of a fully open-source and open-data approach to air traffic simulation. Here, the first of the two main challenges is to achieve a high...
conference paper 2016
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Metz, I.C. (author), Mühlhausen, T (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Bird strikes have operational impacts and cause economic loss to the aviation industry. In the worst case, the damages resulting from bird strikes lead to crashes. The highest risk for bird strikes lies in the area below 3000 ft and thus mainly in airport environments. Despite intense efforts from the airports in controlling the local bird...
conference paper 2016
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Metz, I.C. (author), Ellerbroek, J. (author), Mühlhausen, T (author), Kügler, D. (author), Hoekstra, J.M. (author)
poster 2016
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Sun, J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
With the increasing availability of ADS-B transponders on commercial aircraft, as well as the rapidly growing deployment of ground stations that provide public access to their data, accessing open aircraft flight data is becoming easier for researchers. Given the large number of operational aircraft, significant amounts of flight data can be...
conference paper 2016
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Sun, J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Aircraft mass is an important parameter in many ways, either to build aircraft performance models, to predict flight trajectories, or to simulate air traffic. Mass data is usually considered as sensitive information for airlines and is, therefore, not disclosed to researchers publicly. In this paper, we use two methods to infer the mass of an...
conference paper 2016
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Hobo, C (author), Grashof, AH (author), Hoekstra, J.S.C.M. (author)
report 2016
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Jenie, Y.I. (author), van Kampen, E. (author), de Visser, C.C. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
conference paper 2016
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Jenie, Y.I. (author), van Kampen, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
conference paper 2016
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