Results 21 to 30 of about 21,232 (260)

Identifying community-driven priority questions in acoustic backscatter research

open access: yesFrontiers in Remote Sensing
IntroductionRemotely-sensed acoustic backscatter is an indispensable tool for seabed mapping, among other disciplines. Almost a decade after the GeoHab Backscatter Working Group published its guidelines and recommendations report, new technologies, new ...
Vincent Lecours   +8 more
doaj   +1 more source

Complex Eyed Pockmarks and Submarine Groundwater Discharge Revealed by Acoustic Data and Sediment Cores in Eckernförde Bay, SW Baltic Sea

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Submarine groundwater discharge into coastal areas is a common global phenomenon and is rapidly gaining scientific interest due to its influence on marine ecology, the coastal sedimentary environment, and its potential as a future freshwater resource. We
J. J. L. Hoffmann   +7 more
doaj   +1 more source

Simplifying Backscatter Deployment: Full-Duplex LoRa Backscatter

open access: yesCoRR, 2020
Due to the practical challenges in the deployment of existing half-duplex systems, the promise of ubiquitous backscatter connectivity has eluded us. To address this, we design the first long-range full-duplex LoRa backscatter reader. We leverage existing LoRa chipsets as transceivers and use a microcontroller in combination with inexpensive passive ...
Mohamad Katanbaf   +2 more
openaire   +3 more sources

Multi-Year Observations of Fluorescence and Backscatter at the Southern Ocean Time Series (SOTS) Shed Light on Two Distinct Seasonal Bio-Optical Regimes

open access: yesFrontiers in Marine Science, 2019
This work presents insights from 6 years of chlorophyll-a (Chl) fluorescence and backscatter (700 nm) data at the Southern Ocean Time Series (SOTS) moorings, located in the Subantarctic Zone (SAZ) southwest of Tasmania.
Christina Schallenberg   +7 more
doaj   +1 more source

Underwater backscatter networking [PDF]

open access: yesProceedings of the ACM Special Interest Group on Data Communication, 2019
We present Piezo-Acoustic Backscatter (PAB), the first technology that enables backscatter networking in underwater environments. PAB relies on the piezoelectric effect to enable underwater communication and sensing at near-zero power. Its architecture is inspired by radio backscatter which works well in air but cannot work well underwater due to the ...
Junsu Jang, Fadel Adib
openaire   +2 more sources

Kharif rice crop acreage and yield estimation using microwave and optical remote sensing time series satellite data: A case study of the eastern region of Maharashtra

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus
Aim of the study: The study aims to assess the feasibility of using remote sensing to estimate crop area and yield in a major rice-growing region of Maharashtra.
Pritam Meshram   +2 more
doaj   +1 more source

Autonomous Underwater Vehicle untuk Survei dan Pemantauan Laut

open access: yesJurnal Rekayasa Elektrika, 2017
AUV is an unmanned submersible platform to accomplish a mission. Side-scan sonar, Conductivity Temperature Depth (CTD), and underwater video camera are usually attached on AUV. These sensors were used for identifying seawater and seabed condition.
Henry M. Manik   +8 more
doaj   +1 more source

CRC-Based Reliable WiFi Backscatter Communiation for Supply Chain Management

open access: yesApplied Sciences, 2023
Supply chain management aims to achieve both efficiency and low cost. Backscatter technology provides a low-energy consumption approach for critical links in the supply chain, such as warehouse management and cargo identification. Traditional backscatter
Yun-Hao Liu   +5 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Sentinel-1 Backscatter Time Series for Characterization of Evapotranspiration Dynamics over Temperate Coniferous Forests

open access: yesRemote Sensing, 2022
Forests’ ecosystems are an essential part of the global carbon cycle with vast carbon storage potential. These systems are currently under external pressures showing increasing change due to climate change.
Marlin M. Mueller   +6 more
doaj   +1 more source

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