Results 111 to 120 of about 46,952 (245)
Anti-submarine warfare with continuously active sonar
, 2011 Existing surveillance sonar systems for anti-submarine warfare (ASW) use a pulsed sonar deployed at a low duty cycle. Continuously active sonar (CAS) is of special interest since the technique could provide better detection performance than conventional ...
Vossen, R. van +2 more
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Restoration Ecology, EarlyView.Abstract Introduction Tidal wetland restoration is critical for reversing habitat loss and enhancing resilience under sea‐level rise and climate variability. Dutch Slough in the San Francisco Estuary served as a living laboratory for adaptive management.
Joseph E. Merz +5 more
wiley +1 more source
Sonar-Based Simultaneous Localization and Mapping Using the Semi-Direct Method
Journal of Marine Science and EngineeringThe SLAM problem is a common challenge faced by ROVs working underwater, with the key issue being the accurate estimation of pose. In this work, we make full use of the positional information of point clouds and the surrounding pixel data.
Xu Han +4 more
doaj +1 more source
Restoration Ecology, EarlyView.Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke +3 more
wiley +1 more source
RRS James Cook Cruise 35, 7-19 Jun 2009. Sidescan sonar mapping of the Whittard Canyon, Celtic Margin [PDF]
, 2009 James Cook cruise 035 was aimed at the detailed mapping of the Whittard Canyon system along the Celtic Margin (NE Atlantic). In 12 days, >700 km of track-lines were surveyed with the Towed Ocean Bottom Instrument (TOBI, carrying a 30 kHz sidescan ...
Huvenne, V.A.I.
core +1 more source
Low frequency continuous active sonar
, 2011 Existing sonar systems are commonly deployed at a low duty cycle, i.e. a short transmit signal is used followed by a long listening time. As a result, the target is only illuminated during a short time resulting in only one detection opportunity per ping.
Vossen, R. van +2 more
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Crop, Forage &Turfgrass Management, Volume 12, Issue 2, December 2026.Abstract Sod is an important specialty crop used to establish turfgrass and to control soil erosion in new construction and roadsides. Most sod farms in the northern U.S. grow Kentucky bluegrass (Poa pratensis L.), but recent research indicates potential for growing various low‐input grasses, such as fine fescue taxa (Festuca L. spp.).
Naba R. Amgain +3 more
wiley +1 more source
IET Radar, Sonar & NavigationThis study analyses sonar performance for underwater object detection in four regions of the Marmara Sea, using oceanographic data from the Turkish Naval Forces and open source datasets.
Murat Murat, Ugur Kesen
doaj +1 more source
Drew Rothrock's Fundamental Contributions to Arctic Science
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract David Andrew (Drew) Rothrock III lived during a period of vigorous scientific research in the Earth Sciences, from the International Geophysical Year to the era of satellites and high‐speed computer modeling. Drew made fundamental contributions to Arctic science, helping to lay the theoretical foundations for modeling the movement and ...
Harry L. Stern +4 more
wiley +1 more source
Principles of Sonar Performance Modeling
, 2010 Sonar performance modelling (SPM) is concerned with the prediction of quantitative measures of sonar performance, such as probability of detection. It is a multidisciplinary subject, requiring knowledge and expertise in the disparate fields of underwater
Ainslie, M.A.
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