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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
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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
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Behringer, A. (author), Beerens, S.P. (author), van der Spek, E. (author), Sprik, R. (author)Wideband low frequency transducers are crucial enablers for building underwater communication networks. The use of low frequencies promises long range communication ranges, but most low-frequency transducers are large, lack directionality and have limited bandwidth. The aim of this study is to tackle these limitations. We take a novel approach...conference paper 2019
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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
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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
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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
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- Dol, H. (author), Blom, K. (author), van der Spek, E. (author) conference paper 2016
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- Giodini, S. (author), Binnerts, B. (author) conference paper 2016
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Isufi, E. (author), Dol, H. (author), Leus, G. (author)Flooding-based protocols are a reliable solution to deliver packets in underwater sensor networks. However, these protocols potentially involve all the nodes in the forwarding process. Thus, the performance and energy efficiency are not optimal. In this work, we propose some advances of a flooding-based protocol with the goal to improve the...article 2016
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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
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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
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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
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Dol, H.S. (author), Ainslie, M.A. (author), Colin, M.E.G.D. (author), Janmaat, J. (author)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 modelling of these dynamic sea-surface effects. It is...conference paper 2012
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Dol, H.S. (author), Colin, M.E.G.D. (author), Ainslie, M.A. (author), van Walree, P.A. (author), Janmaat, J. (author)Sea surface scattering by wind-generated waves and bubbles is regarded to be the main non-platform 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. It is...conference paper 2012
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van Walree, P.A. (author), Leus, G. (author), TNO Defensie en Veiligheid (author)Abstract—In this paper, a multicarrier modulation scheme is presented for acoustic communication at low signal-to-noise ratios (SNRs). User bits are put through a rate 1/3 turbo encoder and interleaved with periodic training bits. A maximal-length sequence is prefixed for signal detection and equalizer convergence, and the resulting bit stream...article 2009
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Leus, G. (author), van Walree, P.A. (author), TNO Defensie en Veiligheid (author)A multiband OFDM transmitter and receiver are presented for underwater communications at low SNR. Compared with a single-band OFDMscheme, the multiband approach leads to a considerable reduction in the receiver complexity. The proposed system has been tested at sea with 16 subbands covering a total bandwidth of 3.6 kHz, at user data rates of 4.2...article 2008
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Leus, G. (author), van Walree, P.A. (author), Boschma, J.J. (author), Fanciullacci, C. (author), Gerritsen, H. (author), Tusoni, P. (author), TNO Defensie en Veiligheid (author)We consider the use of orthogonal frequency division multiplexing (OFDM) for covert acoustic telemetry. To reduce the complexity of the receiver we use a multiband approach, modulating each band by OFDM. The system has been tested at sea in a highly time-varying environment. A total bandwidth of 3.6 kHz was divided in 16 subbands. Data rates of...conference paper 2008
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Dol, H.S. (author), Gerdes, F. (author), van Walree, P.A. (author), Jans, W. (author), Kuenzel, S. (author), TNO Defensie en Veiligheid (author)This paper reports results from the joint European project "UUV Covert Acoustic Communications" (UCAC), which aims at the establishment of a covert communication link between an Unmanned Underwater Vehicle (UUV) and a distant mother platform using acoustic telemetry. To this end, sea trials were carried out in 2006 and 2007 in two different...conference paper 2008
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Sangfelt, E. (author), Nordenvaad, M.L. (author), Olofsson, N. (author), Nilsson, B. (author), van Walree, P.A. (author), Oberg, T. (author), TNO Defensie en Veiligheid (author)We introduce a multi-channel soft input/soft output receiver for underwater communication that performs joint iterative channel estimation, linear equalization, and decoding. The transmitted symbols were encoded using a turbo coded bit-sequence. Our method exploits the gain present in the turbo code through a feed-back of soft information from...conference paper 2007
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Kastelein, R.A. (author), van der Heul, S. (author), Verboom, W.C. (author), Triesscheijn, R.J.V. (author), Jennings, N.V. (author), TNO Defensie en Veiligheid (author)To prevent grounding of ships and collisions between ships in shallow coastal waters, an underwater data collection and communication network (ACME) using underwater sounds to encode and transmit data is currently under development. Marine mammals might be affected by ACME sounds since they may use sound of a similar frequency (around 12 kHz)...article 2006
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