ehl logo Acoustics & Environmental hydroacoustics Lab

Laboratories of Image, Signal processing and Acoustics - Ecole polytechnique de Bruxelles / Faculté des Sciences


picture of Arlette Grave

Arlette Grave

Former Members

picture of Yong-xiang Huang

Yong-xiang Huang

picture of Matthias Meyer

Matthias Meyer

Visiting Staff and Associate Members

Lucia Artusi, Mark Asch, Mohamed Berrada, Leandro Calado, Helber Carvalho Macedo, Lussac Prestes Maia, Carlos Eduardo Parente Ribeiro, Isabel Cristina Vendramet Peres Simoes, Susana B. Vinzon.

HERMAND Jean-Pierre

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  • Phone: +32-(0)2-650.30.84 / 474-53.54.64

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Jean-Pierre Hermand received the Ingénieur Civil degree in electrical and mechanical engineering and the Ph.D. degree in applied sciences from the Université libre de Bruxelles (U.L.B.), Bruxelles, Belgium, in 1981 and 1994, respectively. He has been awarded Fellowship of the Acoustical Society of America in 2007 and Fellowship of the Institute of Electrical and Electronics Engineers (IEEE) in 2009.
Between 1985 and 2000, he has held several positions at the SACLANT Undersea Research Centre, La Spezia, Italy, conducting experimental and theoretical research in ocean acoustics with emphasis on inverse problems. In 1991, he became the Principal Investigator of a grant from the U.S. Office of Naval Research to develop environmentally adaptive sonar processing at the Naval Underwater Systems Centre, New London, CT. In 1993, he was appointed Principal Scientist to the SACLANTCEN Environmental Research Division to lead the research and development of acoustic sensing techniques and inversion methods for the characterization of shallow-water marine sediments. He has been a Scientist-in-Charge of international interdisciplinary experiments at sea. He has had adjunct appointments at the AILUN Free University of Nuoro, Sardegna, and at the Ca’ Foscari University of Venice, Italy, and a consultant to industry and government on applied ocean acoustics and environmental measurements. Currently, he is Professor and Research Director at U.L.B. where he founded the Environmental hydroacoustics lab in 2001, which became part of Laboratories of Image, Signal Processing and Acoustics (LISA) in 2012. Since 2001, he has been providing leadership for cross-disciplinary research on ocean acoustic observatories in the framework of European and international projects.
He is a member of the IEEE Societies of Oceanic Engineering (OES) and Signal Processing (SPS). He is currently the Chair of the IEEE OES Technical Committee on “Ocean Signal and Image Processing” and Elected Member of OES Administrative Committee.
His current research interests lie in the integrated use of active and passive acoustics in underwater geosciences, in particular to remotely sense sediment processes in river and estuary, primary production in marine habitat, dynamics of coastal front, and Stone Age culture layer. A list of publications is available here.

WEISSER Stéphanie

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  • Phone: +32-(0)2-650.67.69

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Stéphanie Weisser est docteur en musicologie et ethnomusicologue. Formée à l'ULB et à l'Université Paris VIII, elle a également obtenu un Diplôme de Formation Supérieure en Acoustique Musicale au Conservatoire National Supérieur de la Musique et de la Danse de Paris. Elle est Maître de Conférences à l'ULB et conservateur a.i. des collections d'Inde et d'Indonésie au Musée des Instruments de Musique, où elle est également chercheur scientifique depuis 2010.

REN Qun-yan

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  • Phone: +32-(0)2-650.67.69/30.85

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Qun-yan Ren (任群言) received his Diploma in Electronic and Information Engineering, master degree in Underwater Acoustics Engineering both from Harbin Engineering University (HEU) in 2006 and 2009, respectively. He is currently a PhD student at the Environmental Hydroacoustics Laboratory, Faculty of Applied Science, Université libre de Bruxelles (U.L.B.), Belgium, in co-tutelle with the National Key Laboratory of Underwater Acoustic Technology, HEU, China, under the co-supervision of Prof. Jean-Pierre Hermand and Prof. Shengchun Piao from U.L.B and HEU, respectively. His research interests are underwater sound propagation, signal processing and geoacoustic inversion. His PhD research work focus on the development of passive interferometry technique to process the broadband ship noise field measured by vector sensors for the characterization of shallow water environments. Since Oct 2011,he has been a research fellow funded by the Belgian National Fund for Scientific Research (F.R.S.-F.N.R.S. ) with the 'Aspirant' grant.
任群言 分别于2006年和2009年从中国哈尔滨工程大学获得了电子与信息工程的学士学位和水声工程的硕士学位。现在是比利时布鲁塞尔自由大学和中国哈尔滨工程大学的联合培养博士生,双方导师分别是Jean-Pierre Hermand 教授和朴胜春教授。其研究兴趣主要包括水下声传播、信号处理和地声参数反演。他的博士论文工作主要致力于利用矢量水听器测量的舰船宽带噪声信号通过被动干涉方法进行浅海环境特征分析研究。从2011年10月始,他成为比利时国家科研基金会的研究员并受 'Aspirant' 资金支持。
A list of publications is available here.


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  • Phone: +32-(0)2-650.30.84

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Joanne Randall received her Bachelor of Science in life sciences (2009) and honours degree (2010) from the University of Tasmania (UTAS), Australia. Her Honour’s thesis investigates changing migratory timing in southern bluefin tuna, one of the world’s most highly migratory fish. This work used satellite tracking data together with environmental data to develop algorithms for identifying migratory events in key habitats. Jo is currently a PhD student studying under a co-tutelle between the Institute for Marine Science (IMAS), University of Tasmania and the Environmental Hydroacoustics Laboratory (EHL), Université libre de Bruxelles (U.L.B.), Belgium. This study is under the joint supervision of Prof. Craig Johnson and Prof. Jean-Pierre Hermand. Her work is dedicated to investigating the physiology of key habitat-building temperate water seaweeds and the accuracy and comparability of techniques used to measure primary production including the use of underwater acoustics.

NETO Arthur Ayres

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  • Phone: +32-(0)2-650.30.84

Arthur Ayres Neto graduated in geology by the Federal University of Rio de Janeiro (1988), received a master degree in Marine Geology and Geophysics (1994) from Fluminense Federal University, in Brazil. In 1998 received a PhD from the Christian-Albrecgts University in Kiel, Germany. Between 1987 and 2006 he worked for the offshore industry with the acquisition, processing and interpretation of marine geophysical data (single and multibeam bathymetry, sidescan sonar and high-resolution seismic data), operations and project management. From 2006, he is a Professor for engineering and environmental marine geophysics with emphasis on acoustic techniques at the Fluminense Federal University in Niterói, Brazil. He has been conducting a Post-doc research at the Université libre de Bruxelles on the GEOMARGEM project.

GUO LongXiang

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  • Phone: +32-(0)2-650.30.85

LongXiang Guo (郭龙祥) received the BE, MS, and Ph.D. degrees from the College of Underwater Acoustic Engineering (UAE), Harbin Engineering University (HEU), in the years of 1998, 2001 and 2006. Since 2006, he joined HEU as an associate professor. His main interests cover acoustic signal processing, image processing and acoustical oceanography. Funded researches include echogram data processing technology, channel adaptive waveform design in simulated environments, array directivity optimization through element calibration, and technologies related to vector sensor processing. Since October 2013, he is a post-doctoral fellow at U.L.B. with grants from the Brussels Institute for Research and Innovation (INNOVIRIS) and starting on May 2014 from the Chinese Scholarship Council (CSC). His researches focus on in-situ digital holographic microscopy for ocean plankton imaging (INNOVIRIS) and passive acoustics in ocean inverse problems (CSC) under the guidance of Prof. Jean-Pierre Hermand.


picture of Maxime Baelde
  • Phone: +32-(0)2-650.67.69

Maxime Baelde est élève-ingénieur à l'Ecole Centrale de Lille. Après une classe préparatoire MPSI/PSI, il a intégré l'ECLille pour suivre une formation d'ingénieur généraliste. Il a choisi un parcours orienté acoustique, traitement du signal, électronique embarquée et compte se spécialiser en Décision et Analyse de Données pour son Master 2, afin de devenir ingénieur R&D traitement de signal audio.

ARANHA Valentin

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Valentin Aranha received his Bachelor in Engineering in 2010 and his Master in Engineering Physics in 2012 from Ecole polytechnique de Bruxelles, Université libre de Bruxelles (ULB) in Belgium. Currently, he is a researcher at the Center for Medical Physics and Biomedical Engineering at the Medical University of Vienna, while being a PhD student at the Technical University of Vienna in Austria. He is working in the field of biomedical optics, on the development of novel optical instrumentation and methods for diagnosis in medicine. His research focuses on in vivo applications of Optical Coherence Tomography


picture of Bo lei

Bo lei (雷波) received the B.S. degree in Electronic and Information Engineering, and Ph.D. degree in Underwater Acoustic Engineering from the School of Marine Science and Technology, Northwestern Polytechnical University (NPU), in the years of 2004 and 2010, respectively. From 2010 to 2012, he was a postdoctoral in NPU. Since 2012, he joined NPU as an associate professor. His interests include object scattering in the underwater waveguide, acoustic signal processing and sensor array signal processing, etc. He is currently a visiting scholar with the Environmental Hydroacoustics Laboratory, Faculty of Applied Science, Université libre de Bruxelles (ULB), supported by the Chinese Scholarship Council (CSC).

GRAVE Arlette

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  • Phone: +32-(0)2-650.22.91

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  • Phone: +32-(0)2-650.30.84

After an engineering study in Acoustics and Vibrations from the Ecole Nationale Supérieure d'Ingénieurs du Mans (ENSIM) in France, Rostand Tayong received the Master degree in Acoustics from the Ecole Centrale de Lyon and the Ph.D. degree in Acoustics of porous media from the university of Burgundy still in France. His Ph.D. thesis investigated the acoustical behavior of such media when submitted to high sound levels of excitation. His work was focused on analytical, numerical and mostly experimental methods to improve the understanding of such media acoustical behavior.
He was awarded the best PhD student poster presentation from the French Society of Physics in 2008 and recently won both the young scientist grant 2012 in Prague from the European Acoustics Association (EAA) and the international young scientist grant 2012 in New York from the International Noise Control Engineering (INCE, InterNoise).
His work was recently examined by the "Marquis Who's who in the world" committee and his biography was accepted for publication in the November 2012 edition of this Revue.
He is currently working on the numerical characterization of macroscopically homogeneous and inhomogeneous materials in both media of air and water. A list of publications is available here.

SIEMES Kerstin

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Kerstin Siemes received the Dipl.-Ing. degree in geodesy from Bonn University, Bonn, Germany, in 2007. In 2007 she joined the Acoustic Remote Sensing Group at the Faculty of Aerospace Engineering, Delft University of Technology, Delft, The Netherlands, where she carried out her Ph.D. research in the field of underwater acoustic sediment classification. This research was in co-tutelle with the Environmental Hydroacoustics Laboratory (EHL), Université libre de Bruxelles (U.L.B.), Belgium. After obtaining her doctoral degree in 2013, Dr. Siemes started working in a joint research on echosounder classification techniques between TU Delft and Deltares, Utrecht, The Netherlands.


picture of Leandro Ponsoni

Leandro Ponsoni received his diploma in oceanography (2007) and his master degree in physical oceanography (2010) from the Oceanographic Institute, University of São Paulo (USP), Brazil. Some work was developed at the University of Buenos Aires, and "Servicio de Hidrografía Naval" of the Argentine Navy. His master's thesis develops a method for the extrapolation of temperature profiles from XBT measurements and reconstruction of the salinity profiles for the region of "Brazil Current-Intermediate Western Boundary Current System" (BC-IWBCS). He also investigated the role of spatial salinity changes on this system. He started PhD studies at the Environmental Hydroacoustics Laboratory (EHL), Université libre de Bruxelles (U.L.B.), Belgium, under a grant from CAPES. His Ph.D. project was to study the BC-IWBCS by acoustic tomography and geoacoustic inversion. He has special interest in observational and operational oceanography, including the fields construction for initialization and assimilation in numerical models.


picture of Olivier Carrière

Olivier Carrière received the Master degree in physics and the Ph.D. degree in sciences from the Faculty of Sciences, Université libre de Bruxelles (U.L.B.), Brussels, Belgium, in 2006 and 2011, respectively. His Ph.D. research was focused on the development of sequential Bayesian techniques for solving acoustic tomography and geoacoustic inversion problems in shallow water and coastal environments, supervised by Prof. Jean-Pierre Hermand at the Environmental Hydroacoustics Laboratory (EHL).
He received the Best Student Paper Award in Underwater Acoustics - First Prize at the 162nd Meeting of the Acoustical Society of American in San Diego, California, USA.
From March to August 2011, he became a postdoctoral researcher in the same laboratory working for the HOLOFLOW project. He then obtained a postdoctoral scholarship at the Marine Physical Laboratory, Scripps Institution of Oceanography, University of California, San Diego. A list of publications is available here.