Results 71 to 80 of about 3,432 (185)

Direction-of-arrival estimation under spatial sparse angular and Doppler domains

工程科学学报, 2015
The method of receiving the antenna array vector was proposed under the sparse angle domain and Doppler domain.The direction-of-arrival(DOA) estimation problem in the Doppler frequency domain was discussed to extract the relatively large impulse response
LIU Ting, ZHOU Jie, SHAO Gen-fu
doaj   +1 more source

Wideband DOA Estimation on Co-prime Array via Atomic Norm Minimization

Energies, 2020
This paper introduces a low complexity wideband direction-of-arrival (DOA) estimation algorithm on the co-prime array. To increase the number of the detectable signal sources and to prevent an unnecessary increase in complexity, the low dimensional co ...
Hyeonjin Chung, Young Mi Park, Sunwoo Kim   +2 more
doaj   +1 more source

Azole‐Based Diarylbenzenes for Molecular Solar Thermal Energy Storage: A Computational Analysis

ChemistrySelect, Volume 11, Issue 29, 3 August 2026.
Diarylethenes containing aromatic π‐linkers have attracted research interest in recent years owing to their potential applications in molecular solar thermal (MOST) energy storage systems. In this work, we demonstrate that replacing the thienyl core of diarylbenzenes with an oxazole core and introducing lateral alkyl‐substituents on the oxazole core ...
Thillaiarasi Sukumar, M. V. R. Akshay Sampath, D. Bala Karuna Kumar, Bhagyashri Devaru Bhat, Mahesh Kumar Ravva, Baswanth Oruganti   +5 more
wiley   +1 more source

High-Resolution and Robust One-Bit Direct-of-Arrival Estimation via Reweighted Atomic Norm Estimation

Sensors
In recent years, one-bit quantization has attracted widespread attention in the field of direction-of-arrival (DOA) estimation as a low-cost and low-power solution.
Rui Li, Jianchao Yang, Zheng Dai, Xingyu Lu, Ke Tan, Weimin Su   +5 more
doaj   +1 more source

S‐Adenosyl‐d‐Methionine as a Non‐Physiological Substrate for a Wide Range of SAM‐Dependent Enzymes

ChemBioChem, Volume 27, Issue 14, 29 July 2026.
From methylation and cyclisation to radical chemistry, diverse enzyme classes utilise the non‐canonical cofactor d‐SAM. These findings reveal an unexpected tolerance of SAM‐dependent catalysis towards inversion of the methionine Cα stereocentre. The ability of SAM‐dependent enzymes to accept S‐adenosyl‐d‐methionine [d‐SAM, (SS,RCα)‐SAM] instead of the ...
Philipp Germer, Lukas Gericke, Lars‐Hendrik Koeppl, Ziruo Zou, Emely Jockmann, Marco Kuge, Katrin Zoller, Hannah Herrmann, Ronja Fuderer, Michael K. F. Mohr, Agnes Bartels, Göksu Oral, Peer Lukat, Gunhild Layer, Michael Müller, Wulf Blankenfeldt, Lena Barra, Jennifer N. Andexer   +17 more
wiley   +1 more source

Research Progress in Methods to Estimate High-resolution Direction of Arrival

水下无人系统学报
With the widespread application of array signal processing, the estimation of direction of arrival(DOA) as the core problem of array signal processing has made significant progress.
Wei ZHAO, Xuan LI, Chengpeng HAO
doaj   +1 more source

Insights Into Magmatic Degassing, Hydrothermal Dynamics, and Eruption Precursors From Long Term SO2 Emission Monitoring at Whakaari/White Island, New Zealand

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Long‐term SO2 emission rate time series are critical for deciphering the subsurface processes regulating open‐vent volcanoes, yet extracting cyclical drivers from continuous degassing records remains challenging. We analyze a 14‐year (2006–2020) SO2 emission rate data set from Whakaari/White Island, New Zealand, identifying five chronological ...
A. Mazot, C. Miller, K. Britten, B. Scott, G. Kilgour, Cynthia Werner   +5 more
wiley   +1 more source

Contrasting the TEMPO and TROPOMI Views of Tropospheric NO2: Implications for Diurnal Variability and Model Evaluation

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract Nitrogen dioxide (NO2) is a key indicator of unhealthy air, yet its sub‐daily spatiotemporal variability has not been widely characterized across large spatial scales in North America. Tropospheric Emissions: Monitoring of Pollution (TEMPO), a geostationary hyperspectral UV‐Vis instrument, offers up to 12 hourly observations per location ...
Daniel L. Goldberg, Jeremiah Johnson, Tejas Shah, Omar Nawaz, Gaige H. Kerr, Lulu Chen, Daniel Huber, Laura Judd   +7 more
wiley   +1 more source

An Improved Propagator Estimator for DOA Estimation in Monostatic MIMO Radar in the Presence of Imperfect Waveforms

IEEE Access, 2019
This paper discusses the direction-of-arrival (DOA) estimation problem in multiple-input multiple-output (MIMO) radar with non-orthogonal waveforms.
Chong Shen, Fang Dong, Fangqing Wen, Ziheng Gong, Kun Zhang   +4 more
doaj   +1 more source

An Active Beam‐Reconfigurable Retrodirective Array

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
The proposed beam‐reconfigurable retrodirective array not only enables retroreflection toward the signal source but also achieves flexible beam steering via a tunable reflection plate, offering a viable solution for real‐time multipoint communication and multitarget wireless power transfer.
Wen Yue Wei, Yan Shi, Li Jing Yang, Jun Wei Wu, Qiang Feng, Long Li   +5 more
wiley   +1 more source