Results 51 to 60 of about 19,397 (216)
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
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
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 +3 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
Two axis direction finding antenna system using sum-difference patterns in X band [PDF]
, 2015 This work proposes the direction finding antenna system in two axis ((1), (2)) in X band using sum (sigma) and difference () patterns of received signal.
Shaikh, Ahmed Ziauddin, Tekin, İbrahim
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
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
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 +5 more
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
Target DoA estimation in passive radar using non-uniform linear arrays and multiple frequency channels [PDF]
, 2018 In this paper we present a robust approach for target direction of arrival (DoA) estimation in passive radar that jointly exploits spatial and frequency diversity. Specifically we refer to a DVB-T based passive radar receiver equipped with a linear array
Cardinali, Roberta +3 more
core +1 more source