Results 41 to 50 of about 336,461 (224)

Research on the performance of multi-base buoy arrays under the condition of on-called anti-submarine and warship-helicopter cooperation

MATEC Web of Conferences, 2018
In order to improve the performance of traditional on-called Anti-submarine, the method of combining the towed sonar and helicopter deployment with traditional buoy arrays for multi-base searching is proposed.
Zhang Yuhang, Ju Jianbo, Wang Siqing
doaj   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Software‐Defined Sonar for Unmanned Underwater System

IET Radar, Sonar & Navigation
The advancement of intelligent unmanned underwater systems demands enhanced multifunctionality, flexibility, and an open architecture for sonar equipment.
Hongkun Zhou, Xiyun Ge, Ningyang Wei, Yuhang Gao, Xinyu Liu   +4 more
doaj   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

Optimization of Sparse Cross Array Synthesis via Perturbed Convex Optimization

Sensors, 2020
Three-dimensional (3-D) imaging sonar systems require large planar arrays, which incur hardware costs. In contrast, a cross array consisting of two perpendicular linear arrays can also support 3-D imaging while dramatically reducing the number of sensors.
Boxuan Gu, Yaowu Chen, Rongxin Jiang, Xuesong Liu   +3 more
doaj   +1 more source

Direction-of-Arrival Estimation of Far-Field Sources Under Near-Field Interferences in Passive Sonar Array

IEEE Access, 2021
For passive sonar arrays, when far-field sources lie in a masking region caused by near-field interferences, direction-of-arrival (DOA) estimations of the interfered far-field sources become difficult.
Hojun Lee, Jongmin Ahn, Yongcheol Kim, Jaehak Chung   +3 more
doaj   +1 more source

ADAPT: An Autonomous Forklift for Construction Site Operation

Journal of Field Robotics, EarlyView.
ABSTRACT Efficient material logistics are critical in controlling costs and schedules in the construction industry. However, manual material handling remains prone to inefficiencies, delays, and safety risks. Autonomous forklifts offer a solution to streamline on‐site logistics, reducing reliance on human operators and mitigating labor shortages.
Johannes Huemer, Markus Murschitz, Matthias Schörghuber, Lukas Reisinger, Thomas Kadiofsky, Christoph Weidinger, Mario Niedermeyer, Benedikt Widy, Marcel Zeilinger, Csaba Beleznai, Tobias Glück, Andreas Kugi, Patrik Zips   +12 more
wiley   +1 more source

Robotics for Crop Pollination: Recent Advances and Future Direction

Journal of Field Robotics, EarlyView.
ABSTRACT There is great interest in alternative pollination strategies for crop production in the face of climate change and perennial threats to the traditional pollination mechanisms. This review explores the potential of robotic pollination as a promising solution to these challenges affecting crop fertilization, agricultural sustainability, and ...
Ranjan Sapkota, Matthew D. Whiting, Dawood Ahmed, Manoj Karkee   +3 more
wiley   +1 more source

Beaked whales respond to simulated and actual navy sonar [PDF]

, 2011
This article is distributed under the terms of the Creative Commons Public Domain declaration. The definitive version was published in PLoS One 6 (2011): e17009, doi:10.1371/journal.pone.0017009.Beaked whales have mass stranded during some naval sonar ...
Christopher W. Clark, Walter M. X. Zimmer, DiMarzio Nancy, Boyd Ian L., Durban, John W., Durban John W., Brandon L Southall, Moretti, David, Tyack, Peter L., Claridge Diane E., DiMarzio, Nancy A., Angela D'Amico, Peter L. Tyack, Ian L. Boyd, David Moretti, D'Amico, Angela, Ward, Jessica, John W Durban, Ward Jessica, Zimmer Walter M. X., Walter M X Zimmer, McCarthy, Elena, Peter L Tyack, Jessica Ward, Clark Christopher W., Brandon L. Southall, D'Amico Angela, Boyd, Ian L., Claridge, Diane E., Moretti David, Jarvis, Susan, Ian L Boyd, Morrissey, Ronald, Southall Brandon L., John W. Durban, Clark, Christopher W., Susan Jarvis, Nancy DiMarzio, Morrissey Ronald, Diane E. Claridge, Ronald Morrissey, Tyack Peter L., Zimmer, Walter M. X., Jarvis Susan, Southall, Brandon L., Christopher W Clark, Elena McCarthy, Moretti, David J., DiMarzio, Nancy, Diane E Claridge, McCarthy Elena, Tyack, Peter L.; id_orcid   +51 more
core   +1 more source

Constrained robust submodular sensor selection with application to multistatic sonar arrays

IET Radar, Sonar & Navigation, 2017
The authors develop a framework to select a subset of sensors from a field in which the sensors have an ingrained independence structure. Given an arbitrary independence pattern, the authors construct a graph that denotes pairwise independence between ...
Thomas Powers, David W. Krout, Jeff Bilmes, Les Atlas   +3 more
doaj   +1 more source