Results 91 to 100 of about 13,013 (218)
Journal of Geophysical Research: Atmospheres, Volume 130, Issue 15, 16 August 2025.Abstract Oil and gas production regions are significant sources of greenhouse gases and reactive pollutants such as nitrogen oxides (NOx) and volatile organic compounds. Research has also shown that methane (CH4) emissions reported to the Environmental Protection Agency's (EPA) Greenhouse Gas Reporting Program (GHGRP) are generally underestimated.
K. D. Hajny +11 more
wiley +1 more source
Near-Field Monopulse DoA Estimation for Angle-Sensitive Proximity WiFi Readers
IEEE Access, 2019 We study the effect of close-proximity in the estimation of the Direction-of-Arrival (DoA) using a monopulse antenna array system, with application to angle-sensitive proximity WiFi readers.
Jose Antonio Lopez-Pastor +4 more
doaj +1 more source
Off-grid Direction of Arrival Estimation Using Sparse Bayesian Inference
, 2012 Direction of arrival (DOA) estimation is a classical problem in signal processing with many practical applications. Its research has recently been advanced owing to the development of methods based on sparse signal reconstruction.
Xie, Lihua, Yang, Zai, Zhang, Cishen
core +1 more source
Comprehensive Analysis of Bias in TEMPO NO2 Column Densities Through Pandora Observations
Journal of Geophysical Research: Atmospheres, Volume 130, Issue 15, 16 August 2025.Abstract Tropospheric Emissions: Monitoring of Pollution (TEMPO) is the first geostationary satellite instrument to monitor air pollutants across North America. This study uses Pandora observations to analyze the bias in TEMPO Level‐3 total column density of NO2 (TOTNO2) from August 2023 to December 2024.
Masoud Ghahremanloo +10 more
wiley +1 more source
Hyperphosphorescent OLEDs: Harnessing the Power of MR‐TADF Terminal Emitters
Advanced Optical Materials, Volume 13, Issue 23, August 14, 2025.Hyperphosphorescent organic light‐emitting diodes (HP‐OLEDs) use phosphorescent sensitizers with multiresonant thermally activated delayed fluorescence terminal emitters. HP‐OLEDs show efficient, narrowband electroluminescence and moderate efficiency roll‐off.
Emma V. Puttock +3 more
wiley +1 more source
Remote Sensing, 2017 High-frequency (HF) radars are routinely used for remotely sensing ocean surface currents. However, the performance of the most widely used direction-finding HF radar is degraded due to the effect of the inevitable deviations of actual antenna pattern on
Yeping Lai +3 more
doaj +1 more source
Adaptive channel selection for DOA estimation in MIMO radar
, 2017 We present adaptive strategies for antenna selection for Direction of Arrival (DoA) estimation of a far-field source using TDM MIMO radar with linear arrays. Our treatment is formulated within a general adaptive sensing framework that uses one-step ahead
Brüggenwirth, Stefan +3 more
core +1 more source
Performance Analysis of Noise Subspace-based Narrowband Direction-of-Arrival (DOA) Estimation Algorithms on CPU and GPU [PDF]
, 2020 Hamza Eray, Alptekin Temizel
openalex +2 more sources
Effects of reference sound speed on underwater acoustic direction-of-arrival estimation with horizontal plane array [PDF]
JASA Express LettersDirection-of-arrival (DOA) estimation of an underwater acoustic target is usually dependent on the selection of reference sound speed. For a horizontal line array, severe error of DOA estimation is induced when reference sound speed diverges from phase ...
Feitong Chen +6 more
doaj +1 more source
Cramer-Rao Bound for Sparse Signals Fitting the Low-Rank Model with Small Number of Parameters
, 2015 In this paper, we consider signals with a low-rank covariance matrix which reside in a low-dimensional subspace and can be written in terms of a finite (small) number of parameters. Although such signals do not necessarily have a sparse representation in
Shaghaghi, Mahdi, Vorobyov, Sergiy A.
core +1 more source