Results 51 to 60 of about 173,505,536 (199)

Tracking Positioning Algorithm for Direction of Arrival Based on Direction Lock Loop

Future Internet, 2015
In order to solve the problem of poor real-time performance, low accuracy and high computational complexity in the traditional process of locating and tracking of Direction of Arrival (DOA) of moving targets, this paper proposes a DOA algorithm based on ...
Xiu-Zhi Cheng, Da-Rong Zhu, Shen Zhang, Ping He   +3 more
doaj   +1 more source

Optical Radiation Pressure: Resonant Mechanical Excitation of Thin Films

Annalen der Physik, Volume 538, Issue 10, October 2026.
The modulation of a laser beam generates a modulated radiation pressure force acting on a thin film. A resonant response is observed, leading to a net average thinning of the film. ABSTRACT Optical radiation pressure was directly observed for the first time more than a century ago.
Janine Emile, Olivier Emile
wiley   +1 more source

Direction-of-Arrival Estimation of Virtual Array Signals Based on Doppler Effect

International Journal of Distributed Sensor Networks, 2015
The estimation accuracy of direction-of-departure (DOD) and direction-of-arrival (DOA) is reduced because of Doppler shifts caused by the high-speed moving sources.
Feng Zhao, Xia Hao, Hongbin Chen
doaj   +1 more source

Improved Power Tracking and Performance Evaluation Using a Tri‐Meta Hybrid DOA–CSA–WOA‐Based MPPT Controller for Standalone PV System

Energy Science &Engineering, Volume 14, Issue 10, Page 4963-4987, October 2026.
A Tri‐Meta Hybrid DOA–CSA–WOA Maximum Power Point Tracking controller is developed to enhance photovoltaic system performance. The proposed approach achieves higher tracking efficiency, faster convergence, and robust operation under dynamic irradiance and partial shading conditions.
Ali Abbas, Muhammad Farhan, Nouman Safdar, Muhammad Junaid Rabbani, Mohammad Rashed M. Altimania, Waleed Mohammed Abdelfattah, Hafiz Mudassir Munir   +6 more
wiley   +1 more source

Spatial time-frequency distribution of cross term-based direction-of-arrival estimation for weak non-stationary signal

EURASIP Journal on Wireless Communications and Networking, 2019
In the radar array signal processing direction of arrival (DOA), the estimation of weak non-stationary signal is an important and difficult problem when both strong and weak signals are coexisting particularly because the weak non-stationary signals are ...
Shuai Shao, Aijun Liu, Changjun Yu, Hongjuan Yang, Yong Li, Bo Li   +5 more
doaj   +1 more source

Spatial Localization of Electromagnetic Radiation Sources by Cascade Neural Network Model with Noise Reduction [PDF]

Radioengineering, 2023
In this paper, the Direction of Arrival - DoA estimation for two mobile sources was performed by using the Single Multilayer Perceptron (MLP) neural network model (SMLP-DoA) and the Cascade MLP model(CMLP).
M. Ilic, Z. Stankovic, N. Males-Ilic
doaj  

The OCO‐2 and OCO‐3 ACOS Version 11 XCO2 Data Products: A Benchmark Record for Space‐Based Global Carbon Cycle Research

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract NASA's Orbiting Carbon Observatory‐2 (OCO‐2) and OCO‐3 have been observing Earth's atmosphere from space since September 2014 and August 2019, respectively. The version 11 (v11) Atmospheric Carbon Observations from Space (ACOS) Level 2 full physics (L2FP) retrieval algorithm has been used to provide estimates of the column‐averaged dry‐air ...
Thomas E. Taylor, Christopher W. O’Dell, Albert Chang, Abhishek Chatterjee, Cecilia Cheng, Lan Dang, Saswati Das, Brendan Fisher, Dejian Fu, Jonathan Hobbs, Nicole Jacobs, Graziela R. Keller, William Keely, Matthäus Kiel, Le Kuai, Thomas Kurosu, Alyn Lambert, Otto Lamminpää, Joshua Laughner, Richard Lee, Junjie Liu, Yuliya Marchetti, Steffen Mauceri, Gregory McGarragh, Aronne Merrelli, Robert R. Nelson, Greg Osterman, Fabiano Oyafuso, Sudhanshu Pandey, Vivienne H. Payne, Elise Rimsa, Robert Rosenberg, Dustin Roten, Edwin Sarkissian, Kacie Shelton, Gary Spiers, Cathy To, Paul O. Wennberg, Jia Zong, David F. Baker, Sourish Basu, Frédéric Chevallier, Sean Crowell, Liang Feng, Paul I. Palmer, Brad Weir, Kristan Morgan, Andrey Savtchenko, Matthias Buschmann, Nicholas M. Deutscher, Rigel Kivi, Manvendra Dubey, Frank Hase, Isamu Morino, Justus Notholt, Hirofumi Ohyama, Christof Petri, Markus Rettinger, Kimberly Strong, Ralf Sussmann, Yao Té, Voltaire A. Velazco, Thorsten Warneke, Debra Wunch, Minqiang Zhou, Dave Crisp, Annmarie Eldering, Mike Gunson   +67 more
wiley   +1 more source

Polarization and DOA Estimation Based on Dual-Polarized Conformal Array

International Journal of Antennas and Propagation, 2019
A dual-polarized multiple signal classification (DP-MUSIC) algorithm is presented to estimate the arrival directions and polarizations for a dual-polarized conformal array.
Chao Liu, Shuai Xiang, Liangfeng Xu, Zhengfei Fang   +3 more
doaj   +1 more source

Direction-of-Arrival Estimation Based on Joint Sparsity

Sensors, 2011
We present a DOA estimation algorithm, called Joint-Sparse DOA to address the problem of Direction-of-Arrival (DOA) estimation using sensor arrays. Firstly, DOA estimation is cast as the joint-sparse recovery problem.
Zhitao Huang, Yiyu Zhou, Junhua Wang
doaj   +1 more source

TEMPO Applications During Poor Wintertime Air Quality in Salt Lake City: An Analysis of Persistent Cold Air Pooling Events

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract During the wintertime, the Salt Lake Valley (SLV) experiences episodes of poor air quality during persistent cold air pools (PCAPs), wherein the atmospheric boundary layer remains stable for several days. We examine insights into the accumulation of primary emissions during PCAPs gained from NO2 tropospheric column abundances derived from ...
Kate E. Bartlett, Jeffrey A. Geddes, Haley Humble, Taylor J. Adams, Rachel Mooers, John C. Lin   +5 more
wiley   +1 more source