Results 101 to 110 of about 6,799,249 (280)

Multiscale controls on diurnal convection in the Maritime Continent: Insights from high‐resolution observations in Timika

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Across the Maritime Continent, diurnal rainfall variability is governed by interactions between regional‐scale atmospheric drivers and local land–sea breeze circulations. Afternoon convection is initiated over land by surface heating and propagates offshore, whereas morning rainfall develops over adjacent seas and moves inland under low‐level northerly
Dony Christianto, Robert S. Plant, Thorwald H. M. Stein, Steve J. Woolnough   +3 more
wiley   +1 more source

Object‐based deep learning for probabilistic convective‐core nowcasting from satellite data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Convective cores detected from Meteosat infrared imagery are represented as compact physical objects to generate probabilistic nowcasts up to 6 h ahead. A spatio‐temporal transformer models interactions among evolving core populations and produces gridded probability forecasts across the western Sahel.
Mendrika Rakotomanga, Douglas J. Parker, Nadhir Ben Rached, Seonaid R. Anderson, Cornelia Klein, Steven C. Wells   +5 more
wiley   +1 more source

Robust spectrum sensing under noise uncertainty for spectrum sharing

ETRI Journal, 2019
Spectrum sensing plays an important role in spectrum sharing. Energy detection is generally used because it does not require a priori knowledge of primary user, (PU) signals; however, it is sensitive to noise uncertainty.
Chang‐Joo Kim, Eun Sook Jin, Kyung‐yul Cheon, Seon‐Hwan Kim   +3 more
doaj   +1 more source

DETEKSI SINYAL TARGET DENGAN MENGGUNAKAN METODE ALGORITMA CONSTANT FALSE ALARM RATE (CFAR) PADA SEARCH RADAR [PDF]

, 2018
Teknologi radar memiliki beberapa subsistem yang dapat diproses, diantaranya yaitu subsistem pada transmisi antena, transmitter, receiver, dan signal processing.
FARHAN RAMADHAN
core  

Analysis of the ship target detection in high-resolution SAR images based on information theory and Harris corner detection

EURASIP Journal on Wireless Communications and Networking, 2018
In order to make up the shortcomings of some existing ship target detection algorithms for high-resolution synthetic aperture radar (SAR) images, a ship target detection algorithm based on information theory and Harris corner detection for SAR images is ...
Yangyang Deng, Haijiang Wang, Shuo Liu, Min Sun, Xiaohong Li   +4 more
doaj   +1 more source

Improving heavy precipitation forecasts through phase‐aware nonlinear bias correction of all‐sky infrared radiances using cloud top temperature differences

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study proposes a phase‐aware bias correction framework for all‐sky infrared radiance assimilation. Cloud top temperature differences between observations and model background fields are used to identify cloud‐phase mismatch and cold‐cloud regimes.
Jiwon Hwang, Dong‐Hyun Cha, Myong‐In Lee, SangSeo Park, Yonghan Choi, Ki‐Hong Min   +5 more
wiley   +1 more source

Serial acquisition of ds-cdma signals using smart antennas and adaptive thresholding constant false alarm rate processing

, 2007
This paper proposes an adaptive pseudonoise (PN) code acquisition system that adopts smart antennas and a cell averaging constant false alarm rate (CA-CFAR) processor to achieve reliable PN code acquisition in the presence of fading and interference ...
Tariq H. Alamri, Mourad Barkat, Alshebeili, S.A., Barkat, M., Alamri, T.H.a ,, Saleh A. Alshebeili   +5 more
core   +1 more source

Sonar false alarm rate suppression using classification methods based on acoustic modelling [PDF]

, 2011
The use of high–resolution, active sonar systems in littoral environments often results in high false alarm rates. False alarm rate inflation (FARI) and non–Rayleigh reverberation (NRR) are two well–documented causes.
Hjelmervik, Karl Thomas
core   +1 more source

Uncertainty Evaluation for Testing and Calibrating Mobile Sensors Only Using Short Collocation Periods

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Low‐cost sensors are increasingly being used, and also considered for usage in regulatory contexts like air quality monitoring. Proper sensor calibration and uncertainty evaluation is necessary in such cases. With the advance of mobile sensors, for example, installed on top of a car, new test and calibration paradigms are required, in ...
Gertjan Kok, Shahin Tabandeh
wiley   +1 more source

A Novel Copula-Based Multi-Feature CFAR Framework for Radar Target Detection

Remote Sensing
Multi-feature radar target detection enhances the discrimination between targets and clutter, thereby improving detection accuracy. However, the complex nonlinear dependencies among features present significant challenges for precise control of the false
Juan Li, Yunlong Dong, Ningbo Liu, Yong Huang, Xingyu Jiang, Jinping Sun   +5 more
doaj   +1 more source