Results 11 to 20 of about 58,015 (253)

Late return focusing algorithm for circular synthetic aperture sonar data [PDF]

open access: yesJASA Express Letters, 2021
Synthetic aperture sonar processing is used to generate imagery for remote sensing applications such as environmental characterization and object detection.
J. Daniel Park   +2 more
doaj   +1 more source

The value of remote sensing techniques in supporting effective extrapolation across multiple marine spatial scales [PDF]

open access: yes, 2017
The reporting of ecological phenomena and environmental status routinely required point observations, collected with traditional sampling approaches to be extrapolated to larger reporting scales.
Elliott, Michael, Strong, James Asa
core   +1 more source

Remote sensing of sediment characteristics by optimized echo-envelope matching [PDF]

open access: yes, 2003
A sediment geoacoustic parameter estimation technique is described which compares bottom returns, measured by a calibrated monostatic sonar oriented within 15° of vertical and having a 10°–21° beamwidth, with an echo envelope model based on high ...
de Moustier, Christian   +1 more
core   +2 more sources

Satellite remote sensing of environmental variables can predict acoustic activity of an orthopteran assemblage [PDF]

open access: yesPeerJ, 2022
Passive acoustic monitoring (PAM) is a promising method for biodiversity assessment, which allows for longer and less intrusive sampling when compared to traditional methods (e.g., collecting specimens), by using sound recordings as the primary data ...
Diego A. Gomez-Morales   +1 more
doaj   +2 more sources

Surface-based remote sensing of the mixing-layer height a review

open access: yesMeteorologische Zeitschrift, 2008
Presently available methods for the determination of the mixing-layer height from surface-based acoustic, optical and electro-magnetic remote sensing are summarized and compared.
Stefan Emeis   +2 more
doaj   +1 more source

3D Acoustic Remote Sensing mapping of the Underwater Cultural Heritage in the Marine Protected Area of Baia submerged Park (Bay of Pozzuoli, Southern Italy) [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Underwater archaeology has historically depended on geophysical and remote sensing technology to identify and document submerged archaeological sites and shipwrecks.
C. Violante   +6 more
doaj   +1 more source

Evaluating the adequacy of dynamic pressure remote sensing method in a model gas turbine combustor

open access: yesCase Studies in Thermal Engineering, 2022
Direct measurement of dynamic pressure in a combustor using a flush sensor mounting generally shortens the lifetime and lowers the measurement accuracy of the sensor due to its direct exposure to hot-burnt gases. Thus, indirect remote sensing methods are
Dae Jin Jang, Min Chul Lee
doaj   +1 more source

Changes in humpback whale song occurrence in response to an acoustic source 200 km away. [PDF]

open access: yesPLoS ONE, 2012
The effect of underwater anthropogenic sound on marine mammals is of increasing concern. Here we show that humpback whale (Megaptera novaeangliae) song in the Stellwagen Bank National Marine Sanctuary (SBNMS) was reduced, concurrent with transmissions of
Denise Risch   +3 more
doaj   +1 more source

Progress in acoustic remote sensing of temperatures [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
A major modification in the method of remote sensing of temperatures in the atmosphere (or oceans) by means of acoustic waves provides measurements at discrete altitudes (or depths) rather than path-averaged values. Application of the method to obtaining vertical profiles of temperature has now become merely a problem in engineering development.
Edmund H. Brown, R. Jeffrey Keeler
openaire   +1 more source

Extreme flood-driven fluvial bank erosion and sediment loads: direct process measurements using integrated Mobile Laser Scanning (MLS) and hydro-acoustic techniques: Direct measurement of flood-driven erosion using MLS and MBES [PDF]

open access: yes, 2016
Copyright © 2016 John Wiley & Sons, Ltd. This methods paper details the first attempt at monitoring bank erosion, flow and suspended sediment at a site during flooding on the Mekong River induced by the passage of tropical cyclones.
Aalto, Rolf   +7 more
core   +4 more sources

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