Results 21 to 30 of about 368 (173)

CODAR: Congestion and delay aware routing to detect time critical events

The International Conference on Information Networking 2011 (ICOIN2011), 2011
Reliability and timeliness are two essential requirements of successful detection of critical events in Wireless Sensor Networks (WSNs). The base station (BS) is particularly interested about reliable and timely collection of data sent by the nodes close
Iqbal Gondal, Bhuiyan, Mohammad, Mohammad Masumuzzaman Bhuiyan, Kamruzzaman, Joarder, Gondal, Iqbal, Joarder Kamruzzaman   +5 more
core   +2 more sources

Estimating traveling ionospheric disturbance propagation direction and speed using bistatic high-frequency oceanographic radars

Journal of Space Weather and Space Climate
The purpose of this investigation is to demonstrate how observations from a network of Coastal Ocean Dynamics Applications Radars (CODARs) can be used to derive the parameters of a traveling ionospheric disturbance (TID) in the mid-latitudes.
Markowski Danielle G., Kaeppler Stephen R., Pepper Andrew M., Coleman Lawrence F.   +3 more
doaj   +2 more sources

Data Return Aspects of CODAR and WERA High-Frequency Radars in Mapping Currents

, 2017
Two types of high-frequency (HF) radar systems, long-range CODAR SeaSonde and medium-range WERA, are concurrently operated on the West Florida Coast for the purpose of observing coastal ocean currents and waves.
Vembu Subramanian, Robert H. Weisberg, Yonggang Liu, Clifford R. Merz, Benjamin K. O’Loughlin, Merz, Clifford R., Subramanian, Vembu, Liu, Yonggang, Weisberg, Robert H., O\u27Loughlin, Benjamin   +9 more
core   +3 more sources

HF Radar Performance in a Low-Energy Environment: CODAR SeaSonde Experience on the West Florida Shelf

Journal of Atmospheric and Oceanic Technology, 2010
Three long-range (5 MHz) Coastal Ocean Dynamics Application Radar (CODAR) SeaSonde HF radars overlooking an array of as many as eight moored acoustic Doppler current profilers (ADCPs) have operated on the West Florida Shelf since September 2003 for the ...
Merz, Clifford R., Liu, Yonggang, Weisberg, Robert H.   +2 more
core   +4 more sources

On the use of high-frequency surface wave oceanographic research radars as bistatic single-frequency oblique ionospheric sounders [PDF]

Atmospheric Measurement Techniques, 2022
We demonstrate that bistatic reception of high-frequency oceanographic radars can be used as single-frequency oblique ionospheric sounders. We develop methods that are agnostic of the software-defined radio system to estimate the group range from the ...
S. R. Kaeppler, E. S. Miller, E. S. Miller, D. Cole, D. Cole, T. Updyke   +5 more
doaj   +1 more source

CoDAR

Proceedings of the 2016 International Conference on Management of Data, 2016
Community detection has attracted great interest in graph analysis and mining during the past decade, and a great number of approaches have been developed to address this problem. However, the lack of a uniform framework and a reasonable evaluation method makes it a puzzle to analyze, compare and evaluate the extensive work, let alone picking out a ...
Xiang Ying, Jun Zhang, Jeffrey Xu Yu, Meng Wang, Chaokun Wang   +4 more
core   +2 more sources

Validation of CODAR25MHz High-Frequency RadarderivedWaves inDonghea, Korea

Korea Society of Coastal Disaster Prevention, 2020
In order to examine the possibility of wave observation of CODAR HF radar, which is mostly used in Korea for surface ocean current observation, CODAR HF radar was installed on the coast to observe real-time waves.
정다운, 심재설, 이석, 송규민
core   +2 more sources

First Open-Coast HF Radar Observations of a 2-Phase Volcanic Tsunami, Tonga 2022

Remote Sensing, 2023
We describe results from coastal radar systems that observed anomalous current flows generated by the volcanic eruption in the Tongan archipelago on 15 January 2022 UTC, reporting the first radar detection of a volcanic tsunami. The eruption caused small
Belinda Lipa, Donald Barrick, Chad Whelan, Marcel Losekoot, Hardik Parikh   +4 more
doaj   +1 more source

Progress in Compact HF Radar Measurement of Bimodal Ocean Wave Parameters

Remote Sensing, 2022
We describe an extension of methods used for the derivation of wave information from compact high frequency radar systems and give examples of observations which are compared to measurements from wave buoys close to the radar coverage area.
Belinda Lipa, Maeve Daugharty, Marcel Losekoot, Maria Fernandes   +3 more
doaj   +1 more source

Panorama da produção científica sobre a redução de riscos de desastres no estado do Paraná

Revista de Geografia (Recife), 2021
Esse estudo teve como objetivo a sistematização dos artigos produzidos por instituições de ensino e pesquisa do estado do Paraná, referentes a temática de Redução de Riscos de Desastres. A pesquisa foi desenvolvida por meio de buscas em bancos de dados,
Fernanda Enko dos Santos Batista, Murilo Noli da Fonseca, Larissa Maria da Silva Ferentz, Eduardo Gomes Pinheiro, Danyelle Stringari   +4 more
doaj   +1 more source