Searched for: author%3A%22Dol%2C+H.S.%22
(1 - 20 of 30)

Pages

List view
Grid view
document
Dol, H.S. (author), Blom, K. (author), Sotnik, D. (author), Nisssen, J. (author), Otnes, R. (author), Komulainen, A. (author), Campagnaro, F. (author)
This paper reports on the results achieved in the European Defence Agency (EDA) project Smart Adaptive Longand Short-range underwater Acoustic network (SALSA), that was running from November 2018 to November 2022. SALSA was a European defence cooperation between The Netherlands (lead nation), Germany, Norway, Sweden and Finland. The objective...
conference paper 2023
document
Dol, H.S. (author), Blom, K.C.H. (author), van Riet, M.W.G. (author), van de Sande, J.J.M. (author)
Stand-off mine countermeasure (MCM) operations with unmanned systems frequently require user involvement for the interpretation of image data, for classification and identification, and for decision-making during mine disposal. As the transfer of image data usually requires tethering, this leads to cumbersome operating procedures. We have...
conference paper 2022
document
Blom, K.C.H. (author), Dol, H.S. (author), Berning, F. (author), van Walree, P.A. (author)
For underwater acoustic modems to operate in a time-varying environment, in-mission adaptation is desirable. A physical layer has been designed that supports mechanisms for ad-hoc configuration changes based on (in-situ and indirectly obtained) channel and noise conditions. Coded preambles are used to instruct the receiver of a configuration...
conference paper 2022
document
Dol, H.S. (author), van den Bos, R. (author)
There are situations in which divers need to find their way to an unknown location within acoustic communication range as quickly as possible without broadcasting additional energy besides that of already transmitted acoustic communi cation signals, e.g., for acoustic covertness or saving battery life. For these situations, a prototype of a...
conference paper 2020
document
Dol, H.S. (author), Blom, K. (author), van Walree, P. (author), Otnes, R. (author), Austad, H. (author), Wiegand, T. (author), Sotnik, D. (author)
What can be adjusted in-mission to maintain stable communication and how can it be done? This chapter first lists the important parameters. For example, adjusting the transmission power based on distance, or varying the data rate vs required robustness. It is explained that the modem settings can be optimized based on user/scenario requirements...
bookPart 2020
document
Fransman, J.E. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B. (author)
In this work, the novel algorithm Bayesian Dynamic Programming Optimization Procedure (B-DPOP) is presented to solve multi-agent problems within the Distributed Constraint Optimization Problem framework. The Bayesian optimization framework is used to prove convergence to the global optimum of the B-DPOP algorithm for Lipschitz-continuous...
conference paper 2019
document
Dol, H.S. (author)
In this paper, the European Defence Agency (EDA)project SALSA is presented. In SALSA, which stands for Smart Adaptive Long- and Short-range Acoustic network, five European navies have united to create a common protocol stack for adaptive underwater acoustic communication and cognitive underwater networking. Within four years, the SALSA stack...
conference paper 2019
document
Blom, K.C.H. (author), Dol, H.S. (author)
For enabling efficient operation of untethered underwater vehicles, error-free underwater communication of command-and-control and telemetry data is a necessity. In contrast, the communication requirements for the sensor data of these vehicles are often less stringent, i.e., a few bad pixels in a SONAR image might be tolerated. To maximize...
conference paper 2019
document
Fransman, J.E. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B. (author)
In this paper, Mine Counter-Measures (MCM) operations with multiple cooperative Autonomous Underwater Vehicles (AUVs) are examined within the Distributed Constraint optimization Problem (DCOP) framework. The goal of an MCM-operation is to search for mines and mine-like objects within a predetermined area so that ships can pass the area through a...
conference paper 2019
document
Pacini, F. (author), Paoli, G. (author), Cayón, I. (author), Rivera, T. (author), Sarmiento, B. (author), Kebkal, K. (author), Kebkal, O. (author), Kebkal, V. (author), Geelhoed, J. (author), Schipperijn, B. (author), Dol, H.S. (author), Skogseth, T. (author)
The management of a heterogeneous mix of underwater vehicles needs a robust and reliable communication network, able to connect the remote command and control station (typically ashore or on board of a support ship) with nodes and vehicles in the deep sea. on the basis of this scenario, the infrastructure shall satisfy requirements such as:...
conference paper 2018
document
Fransman, J. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B.D. (author)
DCOP (Distributed Constraint optimization Problem) is a framework for representing distributed multi- agent problems. However, it only allows discrete values for the decision variables, which limits its application for real-world problems. In this paper, an extension of DCOP is investigated to handle variables with continuous domains....
conference paper 2018
document
Blom, K.H.C. (author), Dol, H.S. (author), Prior, M.K. (author)
There is a growing interest in the use of untethered underwater vehicles. These vehicles require robust and error-free underwater communication for transmission of mission-critical data. In contrast, the requirements for sensor payloads are often less stringent. Depending on the type of data, different Quality-ofService (QoS) demands can be...
conference paper 2017
document
Dol, H.S. (author), Casari, P. (author), van der Zwan, T. (author), Otnes, R. (author)
Flexible/adaptive acoustic modems that are reprogrammable/reconfigurable at all layers of the communication stack, either by a user or by means of autonomous decisions, are considered as an important enabler for interoperability and cognitive networking in the underwater domain. In this paper, we review the existing literature on software...
article 2017
document
Blom, K.C.H. (author), Dol, H.S. (author), Kokkeler, A.B.J. (author), Smit, G.J.M. (author)
conference paper 2016
document
Dol, H.S. (author), Colin, M.E.G.D. (author), van Walree, P.A. (author), Otnes, R. (author)
Abstract—In the framework of a bilateral Netherlands-Norway defense research cooperation (2014-2017) between The Netherlands Defence Materiel Organisation (DMO NL) and Forsvarets forskningsinstitutt (FFI NO), it has been shown that a compact general-purpose processor board developed for smartphones can be successfully used for real-time...
conference paper 2015
document
Dol, H.S. (author)
The timely detection of small hazardous objects at the sea surface, such as drifting mines, is challenging for ship-mounted sensor systems, both for underwater sensor systems like sonar and above-water sensor systems like radar and electro-optics (lidar, infrared/visual cameras). This is due to the low target echo strength and radar/lidar cross...
conference paper 2014
document
Dol, H.S. (author), Casari, P. (author), van der Zwan, T. (author)
Flexible/adaptive modems that are reprogramma-ble/reconfigurable at all layers of the communication stack, either by a user or by means of autonomous decisions, are considered as an important enabler for interoperability and cognitive networking in the underwater domain. This paper reviews existing literature on software-defined open...
conference paper 2014
document
Dol, H.S. (author), Colin, M.E.G.D. (author), Ainlie, M.A. (author), Gerdes, F. (author), Schäfke, A. (author), Özkan Sertlekc, H. (author)
This paper shows that it is possible to simulate realistic shallow-water acoustic communication channels using available acoustic propagation models. Key factor is the incorporation of realistic time-dependent sea surface conditions, including both waves and bubbles due to wind.
conference paper 2013
document
Dol, H.S. (author), Colin, M.E.G.D. (author), Ainslie, M.A. (author), van Walree, P.A. (author), Janmaat, J. (author)
Abstract—Sea-surface scattering by wind-generated waves and bubbles is regarded to be the main nonplatform related cause of the time variability of shallow acoustic communication channels. Simulations for predicting the quality of acoustic communication links in such channels thus require adequate modeling of these dynamic sea-surface effects....
article 2013
document
Cannelli, L (author), Leus, G. (author), Dol, H.S. (author), van Walree, P.A. (author)
In this paper a multiband transceiver designed for underwater channels is presented. Multi-branch filtering at the receiver is used to leverage the diversity offered by a multi-scale multi-lag scenario. The multi-branch bank of filters is constructed by estimating scale and delay coefficients through an initial preamble composed by a maximum...
conference paper 2013
Searched for: author%3A%22Dol%2C+H.S.%22
(1 - 20 of 30)

Pages

List view
Grid view