Angular Resolution Enhancement Provided by Nonuniformly-Spaced Linear Hydrophone Arrays in Ocean Acoustic Waveguide Remote Sensing

by Delin Wang, Purnima Ratilal
Published 2017-10-01

Diel and Spatial Dependence of Humpback Song and Non-Song Vocalizations in Fish Spawning Ground

by Wei Huang, Delin Wang, Purnima Ratilal
Published 2016-08-01

Vocalization Source Level Distributions and Pulse Compression Gains of Diverse Baleen Whale Species in the Gulf of Maine

by Delin Wang, Wei Huang, Heriberto Garcia, Purnima Ratilal
Published 2016-10-01

Long-Range Automatic Detection, Acoustic Signature Characterization and Bearing-Time Estimation of Multiple Ships with Coherent Hydrophone Array

by Chenyang Zhu, Sai Geetha Seri, Hamed Mohebbi-Kalkhoran, Purnima Ratilal
Published 2020-11-01

Active Nonlinear Acoustic Sensing of an Object with Sum or Difference Frequency Fields

by Wenjun Zhang, Yuming Liu, Purnima Ratilal, Byunggu Cho, Nicholas C. Makris
Published 2017-09-01

Continental Shelf-Scale Passive Acoustic Detection and Characterization of Diesel-Electric Ships Using a Coherent Hydrophone Array

by Wei Huang, Delin Wang, Heriberto Garcia, Olav Rune Godø, Purnima Ratilal
Published 2017-07-01

Feasibility of Ocean Acoustic Waveguide Remote Sensing (OAWRS) of Atlantic Cod with Seafloor Scattering Limitations

by Ankita D. Jain, Anamaria Ignisca, Dong Hoon Yi, Purnima Ratilal, Nicholas C. Makris
Published 2013-12-01

Instantaneous 3D Continental-Shelf Scale Imaging of Oceanic Fish by Multi-Spectral Resonance Sensing Reveals Group Behavior during Spawning Migration

by Dong Hoon Yi, Zheng Gong, J. Michael Jech, Purnima Ratilal, Nicholas C. Makris
Published 2018-01-01

Comparing Performances of Five Distinct Automatic Classifiers for Fin Whale Vocalizations in Beamformed Spectrograms of Coherent Hydrophone Array

by Heriberto A. Garcia, Trenton Couture, Amit Galor, Jessica M. Topple, Wei Huang, Devesh Tiwari, Purnima Ratilal
Published 2020-01-01

Detection, Localization and Classification of Multiple Mechanized Ocean Vessels over Continental-Shelf Scale Regions with Passive Ocean Acoustic Waveguide Remote Sensing

by Chenyang Zhu, Heriberto Garcia, Anna Kaplan, Matthew Schinault, Nils Olav Handegard, Olav Rune Godø, Wei Huang, Purnima Ratilal
Published 2018-10-01

Ecosystem scale acoustic sensing reveals humpback whale behavior synchronous with herring spawning processes and re-evaluation finds no effect of sonar on humpback song occurrence...

by Zheng Gong, Ankita D Jain, Duong Tran, Dong Hoon Yi, Fan Wu, Alexander Zorn, Purnima Ratilal, Nicholas C Makris
Published 2014-01-01