2024

• Academic lecture
  Dong, Hefeng; Zhu, Xiaoyu. (2024) A Machine Learning Based Approach for Geoacoustic Inversion. Institute of Acoustics, UK ICUA 2024 , Bath 2024-06-17 - 2024-06-20
• Academic lecture
  Dong, Hefeng; Growe, Kevin; Landrø, Martin; Raknes, Espen Birger. (2024) Extraction of shallow shear wave velocities from offshore fiber-optic cables. EAGE EAGE 2024 , Oslo 2024-06-10 - 2024-06-13
• Poster
  Growe, Kevin; Tveit, Anna; Dong, Hefeng. (2024) Towards a real-time railway monitoring system based on Distributed Acoustic Sensing and a Convolutional Neural Net. EGU General Assembly 2024 , Vienna 2024-04-15 - 2024-04-19
• Academic lecture
  Potter, John Robert; Wengle, Emil; Rørstadbotnen, Robin Andre; Dong, Hefeng; Reinen, Tor Arne. (2024) Distributed Acoustic Sensing of Underwater Acoustic Communication Packets: Effects of Frequency and Incident Angle. WUWNET24 , Sibenik 2024-10-28 - 2024-10-31

2023

• Academic lecture
  Zhu, Xiaoyu; Dong, Hefeng. (2023) Shear Wave Velocity Estimation by Deep Reinforcement Learning: A Case Study. European Acoustics Association Forum Acusticum 2023 , Turin 2023-09-11 - 2023-09-15
• Academic lecture
  Zhu, Xiaoyu; Dong, Hefeng. (2023) Underwater Acoustic Source Localization Based On A Vector Sensor System: A Field Case Study. I.A.C.M, Foundation for Research and Technology – Hellas UACE 2023 , Kalamata 2023-06-25 - 2023-06-30

2022

• Academic lecture
  Dong, Hefeng. (2022) Sub-Surface Shear Wave Velocity Images by Ocean Ambient Noise. The Acoustical Society of Korea ICA 2022: 24th International Congress on Acoustics , Gyeongju 2022-10-24 - 2022-10-28
• Academic lecture
  Dong, Hefeng. (2022) Sub-surface characterization using a very short recording of ocean ambient noise . NTNU & USN The 46th Scandinavian Symposium on Physical Acoustics , Geilo 2022-01-30 - 2022-02-02

2021

• Academic lecture
  Dong, Hefeng; Wu, Guoli. (2021) Sub-surface characterization using ocean ambient noise . The 6th Underwater Acoustics Conference & Exhibition (UACE2021) , Virtual 2021-06-21 - 2021-06-24
• Academic lecture
  Zhu, Xiaoyu; Dong, Hefeng; Salvo Rossi, Pierluigi; Landrø, Martin. (2021) Feature selection based on principal component analysis for underwater source localization by deep learning. 44th Scandinavian Symposium on Physical Acoustics (SSPA 2021) 2021-02-01 - 2021-02-02

2020

• Academic lecture
  Talberg, Andreas Sørbrøden; Dong, Hefeng; Johansen, Tonni Franke; Måsøy, Svein-Erik. (2020) Ultrasonic Wave Propagation in Layered Media – Beamforming for target detection and flow measurements. Scandinavian Symposium on Physical Acoustics 2020-01-26 - 2020-01-29

2019

• Academic lecture
  Davidsen, Jan Grimsrud; Dong, Hefeng; Linne, Markus; Andersson, Mathias H.; Piper, Adam; Prystay, Tanya S.. (2019) Effekt av seismisk skyting på stress og atferd hos torsk og sei. Norsk olje og Gass Fisk og seismikk 2019 , Trondheim 2019-04-24 - 2019-04-25
• Academic lecture
  Hovem, Jens M.; Dong, Hefeng. (2019) ACOUSTIC NOISE MEASUREMENTS OF VESSELS WITH ADAPTIVE CHANNEL EQUALISATION. John Papadakis & David Bradley UACE 2019 , Crete 2019-06-30 - 2019-07-05
• Academic lecture
  Dong, Hefeng; Wu, Guoli; Ke, Ganpan. (2019) Extraction of Interface Wave Dispersion Curves from Ocean Ambient Noise. German Acoustical Society ICA 2019 , Aachen 2019-09-09 - 2019-09-13
• Poster
  Davidsen, Jan Grimsrud; Dong, Hefeng; Linne, Markus; Andersson, Mathias H.; Piper, Adam; Prystay, Tanya S.. (2019) Effects of sound exposure from a seismic airgun on heart rate, acceleration and depth use in free-swimming Atlantic cod and saithe. Havforskningsinstituttet 5th international conference on fish telemetry , Arendal 2019-06-23 - 2019-06-30
• Academic lecture
  Davidsen, Jan Grimsrud; Dong, Hefeng; Linne, Markus; Andersson, Mathias H.; Piper, Adam; Prystay, Tanya S.. (2019) Effects of sound exposure from a seismic airgun on heart rate, acceleration and depth use in free-swimming Atlantic cod and saithe. EFFECTS OF NOISE ON AQUATIC LIFE , Haag 2019-07-07 - 2019-07-12
• Academic lecture
  Davidsen, Jan Grimsrud; Dong, Hefeng; Linne, Markus; Andersson, Mathias H.; Piper, Adam; Prystay, Tanya S.. (2019) Effects of seismic airgun on Atlantic fishes. 5th international conference and exhibition on Underwater Acoustics , Crete 2019-06-30 - 2019-07-05
• Lecture
  Talberg, Andreas Sørbrøden; Dong, Hefeng; Johansen, Tonni Franke; Måsøy, Svein-Erik. (2019) Ultrasonic focusing through a steel layer. Scandinavian Symposium on Physical Acoustics 2019 , Geilo 2019-01-27 - 2019-01-30

2018

• Academic lecture
  De La Torre, Pedro R.; Dong, Hefeng; Ricoup, Tiphaine; Ludvigsen, Martin. (2018) The Subsea Quieter as a measure to reduce and control anthropogenic, industrial noise. OCEANS’18 Kobe / Techno-Ocean2018 , Kobe 2018-05-28 - 2018-05-31
• Academic lecture
  Wu, Guoli; Dong, Hefeng; Ke, Ganpan; Song, Junqiang. (2018) Processing Ocean Ambient Nosie to Obtain Reliable Interface Wave Dispersion Measurements. FACA 2018 , Le Mans 2018-10-29 - 2018-10-31
• Academic lecture
  Godin, Oleg A.; Dong, Hefeng. (2018) Characterization of Soft Marine Sediments Using Vector Sensors. Annual meeting of Acoustical Society of America , Minneapolis, Minnesota 2018-05-07 - 2018-05-11
• Academic lecture
  Talberg, Andreas Sørbrøden; Dong, Hefeng; Johansen, Tonni Franke; Måsøy, Svein-Erik. (2018) Target detection through a steel plate using beamforming . Scandinavian Symposium on Physical Acoustics 2018 , Geilo 2018-01-28 - 2018-01-31
• Poster
  Talberg, Andreas Sørbrøden; Dong, Hefeng; Johansen, Tonni Franke; Måsøy, Svein-Erik; Brekke, Svein; Rommetveit, Tarjei. (2018) Ultrasonic focusing through a steel layer for acoustic imaging. IEEE IEEE International Ultrasonics Symposium 2018 , Kobe 2018-10-22 - 2018-10-25

2017

• Academic lecture
  Dosso, Stan E.; Dong, Hefeng. (2017) Bayesian inference and model selection to investigate seabed shear-wave velocity profiles via interface-wave dispersion inversion. ASA ASA fall meeting , New Orleans, Louisiana 2017-12-04 - 2017-12-08
• Academic lecture
  Dong, Hefeng; Badiey, Mohsen; Chapman, N. Ross. (2017) Influence of modal behavior on geoacoustic inversion under internal wave presence. UACE , Skiathos, Greece 2017-09-03 - 2017-09-08
• Academic lecture
  Dosso, Stan E.; Dong, Hefeng. (2017) Gradient-based model parameterizations in Bayesian Geoacoustic Inversion. ICTCA 2017 , Vienna, Austria 2017-07-30 -
• Academic lecture
  Dong, Hefeng. (2017) Passive acoustics for seabed characterization. Visiting Northeast Normal University , Changchun 2017-07-05 -
• Academic lecture
  Dosso, Stan E.; Dong, Hefeng. (2017) Model selection for profile structure in Bayesian geoacoustic inversion. Acoustical Society of America ASA Spring meeting , Boston 2017-06-25 - 2017-06-29
• Academic lecture
  Dong, Hefeng. (2017) Impact of man-made noise on fishes and invertebrates. Visiting Shanghai Ocean University 2017-06-21 - 2017-06-24
• Academic lecture
  Dosso, Stan E.; Dong, Hefeng; Duffaut, Kenneth. (2017) NUMERICAL APPROACHES IN GEOACOUSTIC INVERSION. ICSV 24 , London 2017-07-24 - 2017-07-27
• Academic lecture
  Dong, Hefeng; Song, Ruolong. (2017) Numerical simulation of the effects of cement defects on flextural wave logging. ICTCA 2017 , Vienna, Austria 2017-07-30 - 2017-08-03

2016

• Academic lecture
  Guo, Zhenwei; Dong, Hefeng; Kristensen, Åge. (2016) Image-guided Regularized Marine Controlled Source Electromagnetic Inversion. 78th EAGE Conference and Technical Exhibition , Vienna 2016-05-30 - 2016-06-02
• Academic lecture
  Dong, Hefeng. (2016) Marine Acoustic REsearch at NTNU. Visiting Institute of Acoustics, Chinese Adademy of Sciences , Beijing 2016-04-01 - 2016-04-01
• Academic lecture
  Dong, Hefeng. (2016) Marin Acoustics Research at NTNU. Visiting Harbin Engineering University , Harbin, China 2016-03-28 - 2016-03-28
• Academic lecture
  Dong, Hefeng. (2016) Marine Acoustics Research at NTNU. Visiting Harbin Institute of Technology , Harbin 2016-03-29 - 2016-03-29
• Academic lecture
  Dong, Hefeng; Baidey, Mohsen; Chapman, N. ross. (2016) The impact of internal waves on geoacoustic inversion of broadband airgun data. The Institute of Acoustics Acoustic & Environmental Variability, Fluctuations and Coherence , Cambridge University, Cambridge 2016-12-12 - 2016-12-13
• Poster
  Peng, Bo; Salvo Rossi, Pierluigi; Dong, Hefeng; Kansanen, Kimmo. (2016) DSP Based OFDM Receiver for Time-varying Underwater Acoustic Channels. EURASIP European Signal Processing Conference (EUSIPCO) 2016-08-29 - 2016-09-02
• Academic lecture
  Dong, Hefeng. (2016) Impact of internal waves on sound propagation in shallow water. NTNU 39th Scandinavian Symposium on Physical Acoustics 2016-01-31 - 2016-02-03
• Academic lecture
  Dong, Hefeng. (2016) Marine Acoustics Research at NTNU. Visiting Jilin University , Changchun 2016-03-31 - 2016-03-31

2015

• Academic lecture
  Siddiqui, Salman Ijaz; Ludvigsen, Martin; Dong, Hefeng. (2015) Analysis, Verification and Optimization of AUV Navigation Using Underwater Acoustic Models. IEEE Oceanic Society OCEANS 2015 , Washington DC 2015-10-19 - 2015-10-22
• Academic lecture
  Dong, Hefeng; Badiey, Mohsen; Chapman, N. Ross. (2015) Matched mode geoacoustic inversion of broadband signals in shallow water. Acoustical Society of America Annual Meeting of the Acoustical Society of America , Pittsburgh 2015-05-18 - 2015-05-22
• Academic lecture
  Dong, Hefeng; Badiey, Mohsen; Chapman, N. Ross. (2015) Time-frequency analysis and modal behavior from airgun signals in shallow water. the Institute of Acoustics, UK Seabed and Sediment Acoustics: Measurements and Modelling , University of Bath 2015-09-07 - 2015-09-09
• Academic lecture
  Svensson, U. Peter; Dong, Hefeng. (2015) Akustisk forskning og utdanning ved NTNU. Norsk akustisk selskaps årsmøte , Trondheim 2015-10-23 - 2015-10-24
• Academic lecture
  Guo, Zhenwei; Dong, Hefeng; Kristensen, Åge. (2015) Compared detectable limitations of hydrocarbon exploration by different marine CSEM methods in shallow water. 14th International Conference on Geoinformatics – Theoretical and Applied Aspects , Kiev 2015-05-11 - 2015-05-14
• Academic lecture
  Guo, Zhenwei; Dong, Hefeng. (2015) Seismic coherence driven sparse mesh for CSEM inversion. the 8th Congress of the Balkan Geophysical Society , Chania 2015-10-04 - 2015-10-08
• Academic lecture
  Guo, Zhenwei; Dong, Hefeng; Kristensen, Åge. (2015) Comparison of marine CSEM data acquisition system by Occam inversion: analysis the effect of water depth. SEG/EAGE/EEGS 6th International Geosciences Student Conferencev , in Prague 2015-07-13 - 2015-07-16

2014

• Academic lecture
  Peng, Bo; Dong, Hefeng. (2014) DSP Implementation of Real Time Frequency Domain Turbo Equalizer for Underwater Acoustic Communication. 2nd Underwater Acoustics International Conference and Exhibition , Rhodes 2014-06-22 - 2014-06-27
• Academic lecture
  Dong, Hefeng. (2014) Shear-wave Estimation from Different Type of Sediments. Acoustical Society of America Acoustical Society of America , Providence, RI 2014-05-05 - 2014-05-09
• Academic lecture
  Coward, Stian; Dong, Hefeng; Tollefsen, Dag. (2014) SOURCE LEVEL ESTIMATES OF SMALL CARGO SHIPS FROM MEASUREMENTS IN A FJORD. ACM-FORTH 2nd Underwater Acoustics Conference and Exhibition 2014-06-22 - 2014-06-27

2013

• Academic lecture
  Dong, Hefeng. (2013) Seabed shear-wave velocity estimation by interface-wave dispersion using different inversion methods. IEEE Oceans'13 Bergen 2013-06-10 - 2013-06-13
• Academic lecture
  Peng, Bo; Dong, Hefeng. (2013) Application of Turbo Equalization in PPC Underwater Acoustic Communication. OCEANS'13 MTS/IEEE San Diego 2013-09-23 - 2013-09-26
• Academic lecture
  Cao, Zhengliang; Dong, Hefeng. (2013) Estimation of sehar-wave attenuation profile from Scholte waves using ocean. EAGE Conference & Exhibition'13 Incorporation SPE EUROPEC 2013 2013-06-02 - 2013-06-07
• Lecture
  Dong, Yangze; Dong, Hefeng. (2013) Simulation Study on Cross-Layer Design for Energy Conservation in Underwater Acoustic Networks. OCEANS'13 MTS/IEEE San Diego 2013-09-23 - 2013-09-26
• Academic lecture
  Dong, Hefeng; Chapman, N. Ross. (2013) Measurement of ocean bottom reflectivity with a horizontal line array. 1st international Conference and Exhibition on Underwater Acoustics (UA2013) 2013-06-10 - 2013-06-13
• Academic lecture
  Guo, Zhenwei; Hu, Xiaoping; Dong, Hefeng. (2013) Model Based Interpolation for Magnetic field anomaly analysis. EAGE Conference & Exhibition Incorporating SPE EUROPEC 2013 2013-06-10 - 2013-06-13
• Academic lecture
  Dong, Yangze; Dong, Hefeng; Zhang, Gangqiang. (2013) Study on Denail of Service against Underwater Acoustic Networks. 2nd International Conference on Network, Communication and Computing (ICNCC2013) 2013-12-29 - 2013-12-30

2012

• Academic lecture
  Dong, Hefeng; Hovem, Jens M.. (2012) Estimation of shear-wave velocity using interface wave dispersion in marine enviornment. Information Research Centrer of International Talent, China BIT 3rd Annual World Congress of MarineTech Summit-2012 , Dalian 2012-09-20 - 2012-09-22
• Academic lecture
  Hovem, Jens M.; Dong, Hefeng. (2012) Propagation of anthropogenic noise in the oceans. Information Research Center of International Talent,China BIT 3rd Annual Congress of MarineTech Summit-2012 , Dalian 2012-09-20 - 2012-09-22
• Academic lecture
  Dong, Hefeng; Nguyen, Thanh Duong; Duffaut, Kenneth. (2012) Estimation of shear-wave velocity profiles using shear source data in marine environment. Acoustics 2012 Hong Kong 2012-05-13 - 2012-05-18
• Academic lecture
  Dong, Hefeng; Nguyen, Thanh Duong; Zhang, Bixing. (2012) Estimation of shear-wave velocity profiles in unconsolidated sediments by a dynamic power-law algorithm. Institute of Acoustics, UK 11th European Conference on Underwater Acoustics , Edinburgh 2012-07-02 - 2012-07-06
• Academic lecture
  Dong, Hefeng; Hovem, Jens M.. (2012) CHARACTERIZATION OF SEABED SEDIMENTS BY SEISMIC INTERFACE WAVE DISPERSION. The Deep-Sea and Sub-Seafloor Frontier project The Deep-SEA & SUB-SEAFLOOR FRONTIERS CONFERENCE , SITGES (BARELONA) 2012-03-11 - 2012-03-14
• Poster
  Peng, Bo; Dong, Hefeng. (2012) OFDM Underwater Acoustic Communication Using Passive Phase Conjugation. ECUA 2012 - 11th European Conference on Underwater Acoustics 2012-07-02 - 2012-07-06
• Poster
  Korakas, Alexios-Georgios; Peng, Bo; Dong, Hefeng. (2012) Investigation of low frequency point-to-point underwater acoiustic communication in the Trondheim fjord. ECUA 2012 , Edinburg, UK 2012-07-02 - 2012-07-06
• Academic lecture
  Ke, Ganpan; Dong, Hefeng; Kristensen, Åge. (2012) A new stabilizer for ERT inversion. 74th EAGE annual meeting 2012-06-04 - 2012-06-07
• Poster
  Zhang, Guosong; Peng, Bo; Dong, Hefeng. (2012) Experimental assessment of sparse channel estimations for passive-phase conjugation communications. IEEE Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on , kyoto 2012-03-25 - 2012-03-30

2011

• Academic lecture
  Dong, Hefeng; Ke, Ganpan; Duffaut, Kenneth. (2011) Determination of Shear-wave Velocity in Seabed from Dispersion Data of Love Waves. 73th EAGE Conference & Exhibition incorporating SPE EUROPEC 2011 , Vienna 2011-05-23 - 2011-05-26
• Academic lecture
  Dong, Hefeng; Cao, Zhengliang. (2011) Estimation of shear-wave velocity in marine sediment using Love waves. ICTCA 2011 , Taibei 2011-04-24 - 2011-04-28
• Academic lecture
  Ke, Ganpan; Dong, Hefeng. (2011) Feasibility of Matched-field inversion in cross-well geometry. EAGE 73rd EAGE Conference & Exhibition , Vienna 2011-05-23 - 2011-05-26
• Academic lecture
  Cao, Zhengliang; Dong, Hefeng. (2011) Inversion of shear damping ratio from multi-mode attenduation dispersion of surface waves. EAGE , Vienna 2011-05-23 - 2011-05-26
• Academic lecture
  Li, Cuilin; Doss, Stan E.; Dong, Hefeng. (2011) Bayesian inversion of seabed interface-wave dispersion from ambient noise. Acoustical Society of America , San Diego 2011-10-31 - 2011-11-04
• Academic lecture
  Cao, Zhengliang; Dong, Hefeng. (2011) Inversion of shear properties in ocean sediments from numerical Scholte wave. The Acoustical Society of America , San Diego 2011-10-31 - 2011-11-04
• Academic lecture
  Zhang, Guosong; Hovem, Jens Martin; Dong, Hefeng. (2011) Experimental Assessment of Adaptive Spatial Combining for Underwater Acoustic Communications. The Fifth International Conference on Sensor Technologies and Applications 2011-08-21 - 2011-08-27
• Academic lecture
  Dong, Hefeng. (2011) Research Activities on Marine Acoustics at NTNU. AUR-Lab NTNU Oppdal Control Workshop 2011 , Oppdal 2011-03-16 - 2011-03-18
• Academic lecture
  Dong, Hefeng. (2011) Underwater acoustics on seabed characterization. AUR-Lab NTNU Oppdal Control Workshop 2011 , Oppdal 2011-03-16 - 2011-03-18
• Academic lecture
  Dong, Hefeng; Liu, Lanbo; Thompson, Mark; Morton, Andrew. (2011) Estimation of shear wave velocity in seabed using ocean ambient noise. SSPA 30 Jan. – 2 Feb. 2011 Geilo , Geilo 2011-01-30 - 2011-02-02
• Popular scientific lecture
  Zhang, Guosong; Dong, Hefeng. (2011) Experimental research on adaptive multichannel equalization for underwater communications. The IEEE I&M Society 2011 IEEE International Instrumentation and Measurement Technology Conference , Hangzhou 2011-05-10 - 2011-05-12

2010

• Academic lecture
  Dong, Hefeng. (2010) Shear-wave velocity estimation in shallow water. Harbin Engineering University 5th International Symposium on Acoustic Engineering & Technology , Harbin 2010-07-17 - 2010-07-18
• Academic lecture
  Dong, Hefeng. (2010) Interface wave generation and shear wave velocity estimation in marine environment. Jilin University Guest lecture , Changchun 2010-07-15 - 2010-07-15
• Academic lecture
  Dong, Hefeng; Chapman, N. ross. (2010) Inversion of seismic velocities from seabed reflection data. Norwegian Physical Soceity 33rd Scandinavian Symposium on Physical Acoustics , Geilo 2010-02-07 - 2010-02-10
• Academic lecture
  Dong, Hefeng. (2010) Estimation of seismic interface wave dispersion using ambient noise. Jilin University Computational Physics Seminar , Changchun 2010-08-01 - 2010-08-01
• Academic lecture
  Ke, Ganpan; Dong, Hefeng; Cao, Zhengliang. (2010) Surface wave dispersion curve calculation in TIV medium. 2010 SEG , Denver 2010-10-18 - 2010-10-22
• Academic lecture
  Cao, Zhengliang; Dong, Hefeng. (2010) Attenuation dispersion of Love waves in a viscoelastic multilayered half-space. 2010 SEG , Denver 2010-10-18 - 2010-10-22
• Academic lecture
  Chapman, N. Ross; Dong, Hefeng. (2010) Inversion of seismic velocity of upper oceanic crust from reflection loss data. 10th European Conference on Underwater Acoustics 2010-07-05 - 2010-07-09
• Academic lecture
  Dong, Hefeng; Dosso, Stan E.; Frivik, Svein Arne. (2010) Shear-wave velocity estimation using Bayesian inversion of seismo-acoustic interface wave dispersion. 10th European Conference on Underwater Acoustics 2010-07-05 - 2010-07-09
• Academic lecture
  Dong, Hefeng; Allouche, Nihed el; Drijkoningen, Guy G.; Versteeg, Willem. (2010) Estimation of shear-wave velocity in shallow marine environment. 10th European Conference on Underwater Acoustics 2010-07-05 - 2010-07-09
• Academic lecture
  Ke, Ganpan; Dong, Hefeng; Johnston, Merrick H.. (2010) Rock physics modeling of the frequency dispersion in bitumen saturated sands. 2010 SEG , Denver 2010-10-18 - 2010-10-22
• Academic lecture
  Dong, Hefeng; Liu, Lanbo; Thompson, Mark; Morton, Andrew. (2010) Estimation of seismic interface wave dispersion using ambient noise recorded by ocean bottom cable. 10th European Conference on Underwater Acoustics 2010-07-05 - 2010-07-09
• Academic lecture
  Zhang, Guosong; Hovem, Jens Martin; Dong, Hefeng; Liu, Lanbo. (2010) Experimental Studies of Underwater Acoustic Communications over Multipath Channels. The International Academy, Research and Industry Association The Fourth International Conference on Sensor Technologies and Applications , Venice/Mestre 2010-07-18 - 2010-07-25
• Academic lecture
  Zhang, Guosong; Dong, Hefeng; Hovem, Jens Martin. (2010) Experimental studies of underwater acoustic communication in Trondheim fjord. The Acoustical Society of America Joint 159th ASA Meeting and Noise-Con 2010, Baltimore, Maryland 2010-04-19 - 2010-04-23
• Poster
  Liu, Lanbo; Dong, Hefeng; Thompson, Mark; Morten, Andrew. (2010) Characterization of shear wave velocity in seafloor sediments with noise-generated interface waves. Experiments with Portable Ocean Bottom Seismographs (EPOBS) 2010 , Utah 2010-09-26 - 2010-09-28
• Popular scientific lecture
  Zhang, Guosong; Dong, Hefeng; Liu, Lanbo; Cao, Zhangliang; Ke, Ganpan; Hovem, Jens Martin. (2010) Underwater acoustic communication experiments in the Trondheim Fjord. 33rd Scandinavian Symposium on Physical Acoustics,Geilo 2010-02-07 - 2010-02-10

2009

• Academic lecture
  Dong, Hefeng; Chapman, N. Ross. (2009) Inversion of seismic velocities from seabed reflection data. The 10th Western Pacific Acoustics Conference 2009-09-21 - 2009-09-23
• Academic lecture
  Dong, Hefeng; Liu, Lanbo. (2009) Estimation of seismic interface wave dispersion in geoacoustic inversion. 158th ASA meeting , San Antonio, USA 2009-10-26 - 2009-10-30
• Academic lecture
  Dong, Hefeng; Chapman, N. Ross. (2009) Study of interface wave generation and shear wave velocity estimation. 157th ASA meeting , Portland 2009-05-18 - 2009-05-22
• Academic lecture
  Liu, Lanbo; Dong, Hefeng. (2009) Characterization of shear wave velocity in seafloor with noise-generated seismo-acoustic interface waves. 9th International Conference on Theoretical and Computational Acoustics , Dresden, Germany 2009-09-07 - 2009-09-11
• Academic lecture
  Zhang, Guosong; Hovem, Jens Martin; Dong, Hefeng; Reinen, Tor Arne. (2009) A Simple Time Synchronization Method for Underwater Communication Receivers. IEEE computer society The Third International Conference on Sensor Technologies and Applications , Athens/Glyfada 2009-06-18 - 2009-06-23
• Academic lecture
  Zhang, Guosong; Zhou, Shihong; Hovem, Jens M.; Dong, Hefeng; Jiao, Junsheng. (2009) Experimental Research of Chirp Spread Spectrum for High-rate Underwater Acoustic Communication. The 10th Western Pacific Acoustics Conference 2009-09-21 - 2009-09-23

2008

• Academic lecture
  Dong, Hefeng; Jenssen, Arne Johannes Kaaijk. (2008) A mixin algorithm for geoacoustic inversion. The Acoustical Soceity of America Acoustics'08 Paris , Paris 2008-06-29 - 2008-07-04
• Academic lecture
  Hovem, Jens Martin; Yan, Shefeng; Bao, Xueshan; Dong, Hefeng. (2008) Modeling underwater communication links. The Second International Conference on Sensor Technologies and Applications 2008-08-25 - 2008-08-31

2007

• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Papantonopoulos, Nikolaos. (2007) Dispersion analysis of seismic interface waves based on adaptive wavelet technique. The Eight International Conference on Theoretical and Computational Acoustics, ICTCA 07 2007-07-02 - 2007-07-06

2006

• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Kristensen, Åge. (2006) Estimation of shear wave velocity in shallow marine sediment by multi-component seismic data: a case study. European Conference on Underwater Acoustics , Carvoeiro 2006-06-12 - 2006-06-15

2005

• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Frivik, Svein Arne. (2005) Estimation of shear wave velocity in seafloor sediment by seismo-acoustic interface waves: a case study for geotechnical application. Committee of ICTCA , Hangzhou 2005-09-19 - 2005-09-22
• Academic lecture
  Hovem, Jens Martin; Dong, Hefeng. (2005) A model for predicting propagation of anthropogenic acoustic noise in the sea. IEEE OCEAN EUROPE , Brest 2005-06-20 - 2005-06-23
• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin. (2005) Estimation of shear wave velocity in seafloor sediment by interface waves. The Norwegian Pysical Society , Ustaoset 2005-01-23 - 2005-01-26

2004

• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin. (2004) Modeling of buried targets in the ground. The Norwegian Physical Society The Norwegian Pyhsical Society , Ustaoset 2004-01-25 - 2004-01-28
• Academic lecture
  Hovem, Jens Martin; Dong, Hefeng; Li, Xiukun. (2004) A forward model for geoacoustic inversion based on ray tracing and plane-wave reflection coefficients. University of Pisa, Italy; University of Victoria, Canada; 2nd Workshop on Acoustic Inversion Methods , Ischia 2004-06-28 - 2004-06-30

2003

• Academic lecture
  Maaø, Frank A.; Mjaaland, Svein; Dong, Hefeng. (2003) Vector Fidelity of OBS Data from Cable-Based and Node-Based Acquisition Systems. 65th Ann. Internat. Mtg. European Association of Geoscientists & Engineers , Stavanger, Norway 2003-06-05 -
• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin. (2003) Poroelastic effects om media with air and water saturation. Acoustical Society of America 146th Meeting Acoustical Society of America , Austin, Texas 2003-11-14 -

2002

• Academic lecture
  Maaø, Frank A.; Dong, Hefeng; Mjaaland, Svein; Hokstad, Ketil. (2002) Vector fidelity characterization of ocean bottom seismic data. 64th European Association of Geoscientists & Engineers Conference , Florence, Italy 2002-05-30 -
• Academic lecture
  Dong, Hefeng; Maaø, Frank A.; Mjaaland, Svein. (2002) Study on vector fidelity of ocean bottom seismic data. The 10th International Workshop on Seismic Anisotropy , Tutzing, Germany 2002-04-19 -
• Academic lecture
  Hokstad, Ketil; Mjaaland, Svein; Maaø, Frank A.; Dong, Hefeng. (2002) Vector Fidelity of Ocean-Bottom Seismic Data. 2002 Offshore Technology Conference , Huston, Texas, USA 2002-05-09 -

2001

• Academic lecture
  Kristiansen, Ulf R; Svensson, U. Peter; Dong, Hefeng; Vernet, Emilie; Liabeuf, Jean-Noel. (2001) Calculations of Sound Impulse Responses in City Streets. 17th International Congress on Acoustics , Rome September 2-7 2001

2000

• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Hygen, Hans Olav Kvaal; Hygen, Hans Olav Kvaal. (2000) Poro-elastic effects in air and liquid saturated media. fifth European conference on underwater acoustics, ECUA 2000 , Lyon 10.07.2000 - 13.07.2000
• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Hole, Lars R.; Madshus, Christian. (2000) Finite Difference Solution of Sound Propagation over Porous Ground. 29th International Congress on Noise Control Engineering , Nice, France 2000 August 27-31
• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin. (2000) Simulation of sound propagation above realistic ground by finite difference method. The 23st Scandinavian conference on Physical Acoustic , Ustaoset, Norway, 30 January - 2 February 2000 2000-02-02 -
• Academic lecture
  Dong, Hefeng; Hovem, Jens Martin; Hygen, Hans Olav. (2000) Poro-elastic effects in air and liquid saturated media. fifth European conference on underwater acoustics, ECUA 2000 , Lyon , Frankrike 2000-07-10 - 2000-07-13

1999

• Academic lecture
  Hovem, Jens Martin; Dong, Hefeng. (1999) Analysis and processing of received signals in boreholes. 4. International Conference on Theoretical and Computational Acoustics , Trieste, Italy, May 10-14, 1999
• Academic lecture
  Dong, Hefeng; Zhang, Bixing; Wang, Kexie. (1999) Numerical simulation of acoustic field in a borehole surrounded by horizontal-layered Biot solids by finite difference method. The 4th International Conference on Theoretical and Computational Acoustics , Trieste, Italy 1999-05-14 -
• Academic lecture
  Dong, Hefeng; Wang, Kexie; Hovem, Jens Martin. (1999) A Stable Integration Technique for the Interface Conditions between Two Different Media in the Finite Difference Method. The 21st Scandinavian conference on Physical Acoustic , Ustaoset, Norway, 31 January - 3 February 1999