Searched for: subject%3A%22Maritime%255C%2Benvironments%22
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de Jong, N.J. (author), Otten, M.P.G. (author), Cuenca, M.C. (author), Uysal, F. (author), de Wit, J.J.M. (author)
This paper investigates the benefits of multichannel processing for inverse synthetic aperture radar (ISAR) imaging. There are potential advantages of multichannel processing in radar systems, for example, improved motion estimation, clutter suppression, extraction of supporting information, such as sea wave direction and speed, and ship wake...
conference paper 2021
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van der Kleij, R. (author), Hueting, T.F. (author), Schraagen, J.M.C. (author)
Dynamic Positioning (DP) is a computer-controlled process to automatically keep a floating vessel at a specific position or to follow a pre-defined path (tracking) by using its own propellers and thrusters. The human supervisory controller has no direct need to constantly know what the status is of all parts of the automation and the system it...
article 2018
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Sprung, D. (author), Van Eijk, A.M.J. (author), Sucher, E. (author), Eisele, C. (author), Seiffer, D. (author), Stein, K. (author)
The experiment FESTER (First European South African Transmission ExpeRiment) took place in 2015 to investigate the atmospheric influence on electro-optical systems performance across False Bay / South Africa on a long term basis. Several permanent stations for monitoring electro-optical propagation and atmospheric parameters were set up around...
conference paper 2016
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van Eijk, A.M.J. (author), Sprung, D. (author), Sucher, E. (author), Eisele, C. (author), Seiffer, D. (author), Stein, K. (author)
Optical turbulence for over-water conditions was investigated in a long-term experiment over False Bay near Cape Town, South Africa. A sonic anemometer and two boundary-layer scintillometers were deployed to access in-situ turbulence as well as the integrated turbulence over two 1.8 and 8.7 km paths. Statistical analysis reveals spatial temporal...
conference paper 2016
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van Rossum, W.L. (author), Caro Cuenca, M. (author)
An algorithm developed for optical images has been applied to radar data. The algorithm, Behavior Subtraction, is based on capturing the dynamics of a scene and detecting anomalous behavior. The radar application is the detection of small surface targets at sea. The sea surface yields the expected stable background dynamics, while a surface...
conference paper 2014
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Dijk, J. (author), Bijl, P. (author), van den Broek, S.P. (author), van Eijk, A.M.J. (author)
Our world is constantly changing, and this has its effect on worldwide military operations. For example, there is a change from conventional warfare into a domain that contains asymmetric threats as well. The availability of high-quality imaging information from Electro-Optical (EO) sensors is of high importance, for instance for timely...
conference paper 2014
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Michels, S. (author), Velikova, M. (author), Huijbrechts, B. (author), Novak, P. (author), Hoeksma, J. (author), Scheepens, R. (author), Laarhuis, J. (author), Bonhof, A. (author)
article 2014
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van den Broek, S.P. (author), Bouma, H. (author), Veerman, H.E.T. (author), Benoist, K.W. (author), den Hollander, R.J.M. (author), Schwering, P.B.W. (author)
Long-term tracking is important for maritime situational awareness to identify currently observed ships as earlier encounters. In cases of, for example, piracy and smuggling, past location and behavior analysis are useful to determine whether a ship is of interest. Furthermore, it is beneficial to make this assessment with sensors (such as...
conference paper 2014
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Maggi, F.M. (author), Mooij, A.J. (author), van der Aalst, W.M.P. (author)
In the maritime domain, electronic sensors such as AIS receivers and radars collect large amounts of data about the vessels in a certain geographical area. We investigate the use of process mining techniques for analyzing the behavior of the vessels based on these data. In the context of maritime safety and security, the goal is to support...
bookPart 2013
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van de Laar, P.J.L.J. (author)
In this chapter, we discuss the Poseidon demonstrator: a demonstrator that integrates the individual research results of all partners of the Poseidon project. After describing how the Poseidon demonstrator was built, deployed, and operated, we will not only show many results obtained from the demonstrator in action, but also present our lessons...
bookPart 2013
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Borth, M. (author)
Architectures for situation awareness systems originate from two main concerns: a functional view on the information processing that stems from domain experts’ understanding of their tasks and resources, and a system architect’s view on non-functional aspects of the operations that form such functionality within a system-of-systems realization....
bookPart 2013
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Mooij, A.J. (author), Voorhoeve, M. (author)
Large systems-of-systems are developed by integrating several smaller systems that have been developed independently. System integration often requires adaptation mechanisms for bridging any technical incompatibilities between the systems. In order to develop adapters in a faster way, we study ways to generate adapters from a model-based...
bookPart 2013
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Tretmans, G.J. (author), van de Laar, P.J.L.J. (author)
This book presents and discusses various challenges and solutions for developing systems-of-systems for attaining situation awareness, with applications in the domain of maritime safety and security. This chapter introduces the book, describes the Dutch research project Poseidon from which it resulted, provides an overview of the chapters it...
bookPart 2013
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van Dommelen, W. (author), van de Laar, P.J.L.J. (author), Noldus, L.P.J.J. (author)
In this chapter we compare two application domains in which the tracking of objects and the analysis of their movements are core activities, viz. animal tracking and vessel tracking. More specifically, we investigate whether EthoVision XT, a research tool for video tracking and analysis of the behavior, movement, and activities of animals in a...
bookPart 2013
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de Jong, A.N. (author), Schwering, P.B.W. (author), van Eijk, A.M.J. (author), Gunter, W.H. (author)
Various atmospheric propagation effects are limiting the long range performance of electro-optical imaging systems. These effects include absorption and scattering by molecules and aerosols, refraction due to vertical temperature gradients and scintillation and blurring due to turbulence. In maritime and coastal areas, ranges up to 25 km are...
article 2013
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van den Broek, S.P. (author), Schwering, P.B.W. (author), Liem, K.D. (author), Schleijpen, H.M.A. (author)
In maritime operational scenarios, such as smuggling, piracy, or terrorist threats, it is not only relevant who or what an observed object is, but also where it is now and in the past in relation to other (geographical) objects. In situation and impact assessment, this information is used to determine whether an object is a threat. Single...
conference paper 2012
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de Jong, A.N. (author), van Eijk, A.M.J. (author), Cohen, L.H. (author), Fritz, P.J. (author), Gunter, W.H. (author), Vrahimisb, G. (author), Faith, J. (author)
The FATMOSE trial (False Bay Atmospheric Experiment) is a continuation of the cooperative work between TNO and IMT on atmospheric propagation and point target detection and identification in a maritime environment (South Africa). The atmospheric transmission, being of major importance for target detection, was measured with the MSRT multiband...
conference paper 2011
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van den Broek, A.C. (author), Neef, R.M. (author), Hanckmann, P. (author), van Gosliga, S.P. (author), van Halsema, D. (author)
In present-day military security operations threats are more difficult to reveal than in conventional warfare theatres, since they take place during the course of normal life. These maritime missions often take place in littoral environments, where acts of piracy, drug trafficking and other threatening events become obscured in the crowd of...
conference paper 2011
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van den Broek, A.C. (author), Deves, T.K.G. (author), Neef, R.M. (author), Smith, A.J.E. (author), TNO Defensie en Veiligheid (author)
In present-day military security operations threats are more difficult to reveal than inconventional warfare theatres, since they take place during the course of normal life. For example, during maritime missions in littoral environments, acts of piracy, drug trafficking and other threatening events become obscured in the crowd of everyday...
conference paper 2010
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TNO Defensie en Veiligheid (author), van Eijk, A.M.J. (author), Degache, M.A.C. (author), de Lange, D.J.J. (author), Hammel, S.M. (author), Tsintikidis, D.S. (author)
The FATMOSE trial (FAlse-bay ATMOSpheric Experiment) running over a period from November 2009 to July 2010, was a continuation of the cooperation between TNO and IMT on atmospheric propagation and point target detection and identification in a maritime environment. Instruments were installed for measuring scintillation, blurring- and refraction...
conference paper 2010
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