Results 71 to 80 of about 13,266 (201)
Satellite‐Based Detection of Methane Emissions From Permafrost Peatland Warming
Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Column‐averaged methane (XCH4) observations spanning 2018–2023 by the Tropospheric Monitoring Instrument (TROPOMI) on the Sentinel‐5 Precursor satellite are assessed for evidence of methane (CH4) emissions from permafrost regions. Bi‐monthly TROPOMI XCH4 anomaly maps and soil temperature (Tsoil) anomaly maps from reanalysis data are generated ...
Ray Nassar +7 more
wiley +1 more source
Advanced Photonics Research, Volume 7, Issue 4, April 2026.This review chronicles the evolution of intelligent electromagnetic (EM) perception systems empowered by metasurfaces and artificial intelligence. The progression from data‐driven imaging with implicit priors to semantic sensing with explicit priors is systematically reviewed.
Xingrui Zhou +5 more
wiley +1 more source
Novel two-dimensional DOA estimation with L-shaped array
EURASIP Journal on Advances in Signal Processing, 2011 Two-dimensional (2D) direction-of-arrival (DOA) estimation has played an important role in array signal processing. In this article, we address a problem of bind 2D-DOA estimation with L-shaped array.
Xiaofei Zhang, Jianfeng Li, Lingyun Xu
doaj
Multiple Snapshot Matching Pursuit For Direction Of Arrival (Doa) Estimation
, 2007 Publication in the conference proceedings of EUSIPCO, Poznan, Poland ...
openaire +3 more sources
Stability of Lead‐Free Perovskite Solar Cells
Advanced Sustainable Systems, Volume 10, Issue 3, March 2026.This review article discusses the very recent status of stability of lead‐free perovskite solar cells, possible challenges, fabrication techniques, the degradation mechanism of lead‐free PSCs affecting stability, possible causes hindering the simultaneous improvement of efficiency and stability of lead‐free PSCs, potential outlook, and future research ...
Pranta Barua +4 more
wiley +1 more source
Enhanced off-grid DOA estimation by corrected power Bayesian inference using difference coarray
The Journal of Engineering, 2019 Sparse Bayesian inference for on-grid direction-of-arrival (DOA) estimation using difference coarray was investigated in the authors’ previous work to estimate more signal sources than the number of physical antenna elements. Sparse Bayesian inference is
Yanan Ma, Xianbin Cao, Xiangrong Wang
doaj +1 more source
Transmit Array Interpolation for DOA Estimation via Tensor Decomposition in 2D MIMO Radar
, 2017 In this paper, we propose a two-dimensional (2D) joint transmit array interpolation and beamspace design for planar array mono-static multiple-input-multiple-output (MIMO) radar for direction-of-arrival (DOA) estimation via tensor modeling.
Cao, Ming-Yang +2 more
core +1 more source
Rigid Hollow Microparticles for Enhanced Focused Ultrasound Treatment Under Optoacoustic Guidance
Advanced Science, Volume 13, Issue 13, 3 March 2026.By combining focused ultrasound (FUS) and acoustically active hollow borosilicate microparticles (HBMPs), we demonstrate tunable control over interparticle dynamics and their localized thermal energy deposition. Modulation of acoustic frequency and particle concentration tailors the energy delivery, allowing adaptive, material‐based regulation of ...
Nima Mahkam +6 more
wiley +1 more source
A Sum-of-Squares and Semidefinite Programming Approach for Maximum Likelihood DOA Estimation
Sensors, 2016 Direction of arrival (DOA) estimation using a uniform linear array (ULA) is a classical problem in array signal processing. In this paper, we focus on DOA estimation based on the maximum likelihood (ML) criterion, transform the estimation problem into a ...
Shu Cai, Quan Zhou, Hongbo Zhu
doaj +1 more source
A combined BP‐MF algorithm for wideband off‐grid DOA estimation with DP prior
Electronics Letters, 2022 Direction‐of‐arrival (DOA) estimation based on sparse Bayesian learning (SBL) framework has attracted extensive attention. The accuracy of on‐grid DOA estimation is restricted by the prescribed grid, while off‐grid approaches resolves the problem of grid
Mengge Li +3 more
doaj +1 more source