Results 71 to 80 of about 166,346,949 (214)

Position determination of acoustic source using a discrete probability density method supported by joint detection and time of arrival estimation [PDF]

Scientific Technical Review, 2017
The localization of various acoustic sources in a battlefield (such as weapon rounds, mortars, rockets, mines, improvised explosive devices, vehicle-borne improvised explosive devices and airborne vehicles) nowadays has significant history.
Pokrajac Ivan, Vračar Miodrag, Kozić Nadica, Brusin Radiana, Stanojević Milan   +4 more
doaj  

Spaceborne Far‐Infrared Signal Simulations Over the Antarctic Plateau With Temperature‐Dependent Ice Cloud Optical Properties

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Longwave cloud radiative effects significantly influence variability in global and regional Earth systems. However, there have been very few, if any, measurements of the far‐infrared (FIR) radiation over the polar regions, where about half of the outgoing longwave radiation is in the FIR spectrum. This motivated the Polar Radiant Energy in the
Tong Ren, Ping Yang, Xianglei Huang
wiley   +1 more source

Evaluating the Role of Kernel Choice on Radiative Feedback Estimates

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Radiative feedbacks are important for understanding climate sensitivity, yet estimates vary widely across climate models. Feedbacks are often computed using the radiative kernel technique, which uses pre‐calculated radiative sensitivities (kernels) derived from different models and base states. While much attention has been given to intermodel
Kaitlyn Wen, Ivan Mitevski, Tyler P. Janoski, Gabriel A. Vecchi   +3 more
wiley   +1 more source

Static Behaviors of Confined Time-Arrival Operators [PDF]

, 2007
We show that the quantization of the classical Time-of-Arrival (TOA) for arbitrary position X still leads to a class of self-adjoint TOA-operator for a confined particle.
Bahague Jr., R. R., Galapon, E. A.
core  

Refining the Simulation of Mixed‐Phase Clouds Over Coastal Antarctica With a Tailored Ice Nucleating Particle Parameterization

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Climate models have substantial biases in downwelling shortwave radiation over the Southern Ocean (SO) and Antarctica, primarily due to their inability to accurately represent the frequent occurrence of low‐level mixed‐phase clouds. Building on the evaluation of the Unified Model (UM) Regional Atmosphere and Land version 3 (RAL3), this study ...
Zhangcheng Pei, Sonya L. Fiddes, Marc D. Mallet, Simon P. Alexander, Kalli Furtado, Calum Knight, Greg Roff, Daniel Smith, Alain Protat, Adrian McDonald, W. John R. French   +10 more
wiley   +1 more source

Multi-Source Localization Using Time of Arrival Self-Clustering Method in Wireless Sensor Networks

IEEE Access, 2019
The localization of multiple signal sources based on Time Of Arrival (TOA) measurements in wireless sensor networks is investigated in this paper. When the signal sources cannot be distinguished by their signatures or other unique characteristics, the ...
Xinwei Guo, Zhifei Chen, Xiaoqing Hu, Xiaodong Li   +3 more
doaj   +1 more source

Morphology‐Driven Ternary Pattern Space Spans Shallow Marine Clouds

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Marine shallow clouds exhibit a variety of patterns, which have been the subject of extensive research. In this study, we introduce a new approach for their continuous classification using Moderate Resolution Imaging Spectroradiometer (MODIS) true color imagery.
Hadar Roth, Tom Dror, Orit Altaratz, Ilan Koren   +3 more
wiley   +1 more source

Joint DOA and TOA estimation method based on Pareto multi-task learning

上海师范大学学报. 自然科学版
A joint estimation method for direction of arrival （DOA） and time of arrival （TOA） was proposed based on Pareto multi-task learning， which transformed the traditional multi-task learning problem into a multi-objective optimization problem for solution. A
CHEN Erqi, WEI Shuang
doaj   +1 more source

Surfaceome Reprogramming of Stemsomes Promotes Lung Cancer Targeting via Potentiated Receptor–Ligand Interactions

Advanced Science, Volume 13, Issue 51, 14 September 2026.
This study presents a surfaceome‐reprogramming strategy for mutation‐independent lung cancer therapy by repurposing dexamethasone to prime mesenchymal stem cell‐derived nanovesicles. The engineered vesicles leverage multi‐valent interactions mediated by upregulated adhesion proteins, EPHA2, and NOTCH3.
Geunhye Kim, In Ah Kwon, Bo Seop Jeong, Hyo Seon Kim, Joo‐Hwan Park, Sung Jean Park, Sang‐Rae Lee, Youngki Lee, Dongwoo Khang   +8 more
wiley   +1 more source

Cramer-Rao bounds in the estimation of time of arrival in fading channels

EURASIP Journal on Advances in Signal Processing, 2018
This paper computes the Cramer-Rao bounds for the time of arrival estimation in a multipath Rice and Rayleigh fading scenario, conditioned to the previous estimation of a set of propagation channels, since these channel estimates (correlation between ...
René Játiva, Josep Vidal
doaj   +1 more source