Search Results - "Simons, Dick"

Mussel culture monitoring with semi-supervised machine learning on multibeam echosounder data using label spreading by Bai, Qian, Amiri-Simkooei, Alireza, Mestdagh, Sebastiaan, Simons, Dick G., Snellen, Mirjam

“…High diversity seabed habitats, such as shellfish aggregations, play a significant role in marine ecosystem sustainability but are susceptible to bottom…”
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Using global optimization methods for three-dimensional localization and quantification of incoherent acoustic sources by von den Hoff, Bieke, Merino-Martínez, Roberto, Simons, Dick G., Snellen, Mirjam

“…Complex acoustic systems typically present three-dimensional distributions of noise sources. Conventional acoustic imaging methods with planar microphone…”
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Assessing the shielding of engine noise by the wings for current aircraft using model predictions and measurements by Vieira, Ana, Snellen, Mirjam, Simons, Dick G.

“…Reducing aircraft noise is a major issue to be dealt with by the aerospace industry. In addition to lowering noise emissions from the engine and airframe, also…”
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Performance of Multibeam Echosounder Backscatter-Based Classification for Monitoring Sediment Distributions Using Multitemporal Large-Scale Ocean Data Sets by Snellen, Mirjam, Gaida, Timo C., Koop, Leo, Alevizos, Evangelos, Simons, Dick G.

“…Obtaining an overview of the spatial and temporal distribution of seabed sediments is of high interest for multiple research disciplines. Multibeam…”
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Mapping the Seabed and Shallow Subsurface with Multi-Frequency Multibeam Echosounders by Gaida, Timo C., Mohammadloo, Tannaz H., Snellen, Mirjam, Simons, Dick G.

“…Multi-frequency multibeam backscatter (BS) has indicated, in particular for fine sediments, the potential for increasing the discrimination between different…”
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Effect of trailing edge serration-flow misalignment on airfoil noise emissions by Arce León, Carlos, Merino-Martínez, Roberto, Ragni, Daniele, Avallone, Francesco, Scarano, Fulvio, Pröbsting, Stefan, Snellen, Mirjam, Simons, Dick G., Madsen, Jesper

“…The broadband noise generated by the scattering of turbulent flow at the trailing edge of a NACA 0018 airfoil with trailing edge serrations is investigated,…”
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Assessing the Performance of the Phase Difference Bathymetric Sonar Depth Uncertainty Prediction Model by Mohammadloo, Tannaz H., Geen, Matt, S. Sewada, Jitendra, Snellen, Mirjam, G. Simons, Dick

“…Realistic predictions of the contribution of the uncertainty sources affecting the quality of the bathymetric measurements prior to a survey is of importance…”
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Assessing the Performance of the Multi-Beam Echo-Sounder Bathymetric Uncertainty Prediction Model by H. Mohammadloo, Tannaz, Snellen, Mirjam, G. Simons, Dick

“…Realistic predictions of the contribution of the various sources affecting the quality of the bathymetric measurements prior to a survey are of importance to…”
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A Multispectral Bayesian Classification Method for Increased Acoustic Discrimination of Seabed Sediments Using Multi-Frequency Multibeam Backscatter Data by Gaida, Timo, Tengku Ali, Tengku, Snellen, Mirjam, Amiri-Simkooei, Alireza, van Dijk, Thaiënne, Simons, Dick

“…Multi-frequency backscatter data collected from multibeam echosounders (MBESs) is increasingly becoming available. The ability to collect data at multiple…”
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A Bayesian approach to seafloor classification using multi-beam echo-sounder backscatter data by Simons, Dick G., Snellen, Mirjam

“…Seafloor classification using acoustic remote sensing techniques is an attractive approach due to its high-coverage capabilities and limited costs. The…”
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Comparative assessment of measured and modelled aircraft noise around Amsterdam Airport Schiphol by Simons, Dick G., Besnea, Irina, Mohammadloo, Tannaz H., Melkert, Joris A., Snellen, Mirjam

“…The impressive growth of the aviation industry and the number of flights entail several environmental repercussions, such as increased aircraft noise…”
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Analysis of shielding of propeller noise using beamforming and predictions by Vieira, Ana, Snellen, Mirjam, Malgoezar, Anwar M. N., Merino-Martinez, Roberto, Simons, Dick G.

“…Engine noise shielding is an important measure towards low-noise aircraft configurations. Such designs are supported by prediction tools that indicate high…”
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Observations regarding coarse sediment classification based on multi-beam echo-sounder's backscatter strength and depth residuals in Dutch rivers by Eleftherakis, Dimitrios, Snellen, Mirjam, Amiri-Simkooei, AliReza, Simons, Dick G, Siemes, Kerstin

“…This contribution investigates the behavior of two important riverbed sediment classifiers, derived from multi-beam echo-sounder (MBES)-operating at 300…”
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Acoustic discrimination of relatively homogeneous fine sediments using Bayesian classification on MBES data by Alevizos, Evangelos, Snellen, Mirjam, Simons, Dick G., Siemes, Kerstin, Greinert, Jens

“…Modern seafloor mapping is based on high resolution MBES systems that provide detailed bathymetric and acoustic intensity (backscatter) information. We examine…”
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Enhanced HR-CLEAN-SC for resolving multiple closely spaced sound sources by Luesutthiviboon, Salil, Malgoezar, Anwar MN, Merino-Martinez, Roberto, Snellen, Mirjam, Sijtsma, Pieter, Simons, Dick G

“…The recently introduced high-resolution (HR)-CLEAN-SC algorithm for acoustic imaging provides ‘super-resolution’, i.e. the ability to discern sound sources…”
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Multi-beam echo-sounder bathymetric measurements: Implications of using frequency modulated pulses by H. Mohammadloo, Tannaz, Snellen, Mirjam, Simons, Dick G.

“…In this contribution bathymetric uncertainties induced by the use of frequency modulated (FM) signals for multi-beam-echo-sounder (MBES) measurements are…”
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Geostatistical modelling of multibeam backscatter for full-coverage seabed sediment maps by Gaida, Timo C., Snellen, Mirjam, van Dijk, Thaiënne A. G. P., Simons, Dick G.

“…Extensive seabed sediment mapping is highly relevant to describe marine ecosystems and to quantify the distribution and extent of benthic habitats. Compared to…”
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On the use of global optimization methods for acoustic source mapping by Malgoezar, Anwar M. N., Snellen, Mirjam, Merino-Martinez, Roberto, Simons, Dick G., Sijtsma, Pieter

“…Conventional beamforming with a microphone array is a well-established method for localizing and quantifying sound sources. It provides estimates for the…”
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Experimental characterization of noise radiation from a ducted propeller of an unmanned aerial vehicle by Malgoezar, Anwar MN, Vieira, Ana, Snellen, Mirjam, Simons, Dick G, Veldhuis, Leo LM

“…Ducted propellers are an interesting design choice for unmanned aerial vehicle (UAV) concepts due to a potential increase of the propeller efficiency. In such…”
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Seafloor Classification in a Sand Wave Environment on the Dutch Continental Shelf Using Multibeam Echosounder Backscatter Data by Koop, Leo, Amiri-Simkooei, Alireza, J. van der Reijden, Karin, O’Flynn, Sarah, Snellen, Mirjam, G. Simons, Dick

“…High resolution maps of sandy seafloors are valuable to understand seafloor dynamics, plan engineering projects, and create detailed benthic habitat maps. This…”
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