Results 111 to 120 of about 2,719,974 (280)

Artificial Intelligence applications in Noise Radar Technology

IET Radar, Sonar & Navigation
Radar systems are a topic of great interest, especially due to their extensive range of applications and ability to operate in all weather conditions. Modern radars have high requirements such as its resolution, accuracy and robustness, depending on the ...
Afonso L. Sénica, Paulo A. C. Marques, Mário A. T. Figueiredo   +2 more
doaj   +1 more source

Radar sounding using the Cassini altimeter waveform modeling and Monte Carlo approach for data inversion observations of Titan's seas [PDF]

, 2016
Recently, the Cassini RADAR has been used as a sounder to probe the depth and constrain the composition of hydrocarbon seas on Saturn's largest moon, Titan.
Hayes, A., Hofgartner, J. D., Lunine, Jonathan I., Mastrogiuseppe, Marco, Poggiali, Valerio, Seu, Roberto   +5 more
core   +1 more source

Low‐Rank Gap Filling and Downscaling for SMAP Soil Moisture Datasets

Ecohydrology, Volume 18, Issue 3, April-May 2025.
ABSTRACT Soil moisture is the linchpin of the surface hydrologic cycle, controlling the partitioning of water and energy fluxes at the surface. Without it, vegetation, and hence life on the solid Earth as we know it, would not exist. Understanding ecohydrology is understanding the availability of soil moisture to vegetation.
Kevin Beale, Rafael L. Bras, Justin Romberg   +2 more
wiley   +1 more source

Deep learning-based LPI radar signals analysis and identification using a Nyquist Folding Receiver architecture

Defence Technology, 2023
Nyquist Folding Receiver (NYFR) is a perceptron structure that realizes a low probability of intercept (LPI) signal analog to information. Aiming at the problem of LPI radar signal receiving, the time domain, frequency domain, and time-frequency domain ...
Tao Wan, Kai-li Jiang, Hao Ji, Bin Tang
doaj  

Navigating the risks and rewards of scavenging in multipredator, human‐impacted landscapes

Ecology, Volume 106, Issue 5, May 2025.
Abstract Large carnivores can influence smaller scavengers through both positive and negative interactions (e.g., carrion provisioning and intraguild killing) and ultimately shape scavenging efficiency. However, we know little about this trade‐off in anthropogenic landscapes where humans kill carnivores and provide carrion subsidies.
Calum X. Cunningham, Rebecca Windell, Lauren C. Satterfield, Aaron J. Wirsing, Thomas M. Newsome, Taylor R. Ganz, Laura R. Prugh   +6 more
wiley   +1 more source

Visual Attention to Radar Displays [PDF]

, 1984
A model is described which predicts the allocation of attention to the features of a radar display. It uses the growth of uncertainty and the probability of near collision to call the eye to a feature of the display.
Brophy, C., Moray, N., Richards, M.
core   +1 more source

Improvement of Ice Particle Spectral Relative Dispersion Parameterization in the BCC‐AGCM Model and Its Impact on Global Climate Simulation

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 5, May 2025.
Abstract The representation of cloud microphysical processes in climate models continues to be a major challenge leading to uncertainty in climate simulations. The shape parameter (equivalent to relative dispersion) of gamma distribution for ice particles is assumed to be 0 in the Beijing Climate Center Atmospheric General Circulation Model (BCC‐AGCM).
Pengcheng Lin, Chunsong Lu, Xin He, Yiming Liu, Tongwen Wu, Yixiong Lu, Junjun Li, Jing Yang, Lei Zhu, Xiangjun Shi, Qinyao Zou, Ru Zhou   +11 more
wiley   +1 more source

OMP-type Algorithm with Structured Sparsity Patterns for Multipath Radar Signals [PDF]

arXiv, 2011
A transmitted, unknown radar signal is observed at the receiver through more than one path in additive noise. The aim is to recover the waveform of the intercepted signal and to simultaneously estimate the direction of arrival (DOA). We propose an approach exploiting the parsimonious time-frequency representation of the signal by applying a new OMP ...
arxiv  

Group Iterative Spectrum Thresholding for Super-Resolution Sparse Spectral Selection [PDF]

, 2013
Recently, sparsity-based algorithms are proposed for super-resolution spectrum estimation. However, to achieve adequately high resolution in real-world signal analysis, the dictionary atoms have to be close to each other in frequency, thereby resulting ...
Li, Huanghuang, She, Yiyuan, Wang, Jiangping, Wu, Dapeng   +3 more
core   +1 more source

Impacts of DMS Emissions and Chemistry on E3SMv2 Simulated Cloud Droplet Numbers and Aerosol Concentrations Over the Southern Ocean

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 5, May 2025.
Abstract The accurate representation of cloud droplet number concentration (Nd) is crucial for predicting future climate. However, models often underestimate Nd over the Southern Ocean (SO), where natural sources dominate, and aerosols are composed primarily of marine biogenic sulfate and sea spray.
Litai Kang, Roger Marchand, Po‐Lun Ma, Meng Huang, Robert Wood, Ursula Jongebloed, Becky Alexander   +6 more
wiley   +1 more source