Results 31 to 40 of about 9,915 (201)

Phân tích hiệu suất của các phương pháp ước lượng DoA cho các hệ thống sử dụng ADC phân giải thấp

Tạp chí Khoa học và Công nghệ
Ước lượng hướng đến (Direction of Arrival – DoA) là một nhiệm vụ cốt lõi trong xử lý tín hiệu mảng, đóng vai trò thiết yếu trong các ứng dụng như radar, sonar và truyền thông không dây. Để giảm độ phức tạp phần cứng, chi phí và tiêu thụ điện năng, các bộ
Vien Nguyen-Duy-Nhat, Hung Nguyen-Le
doaj   +1 more source

Improved scheme for clutter rejection and DOA estimation in passive radar

The Journal of Engineering, 2019
Targets are hard to be detected by passive radars unless clutter, namely direct-path signal and multi-path signal, is suppressed. The subcarrier-based spatial adaptive processing is a high-performance spatial-domain clutter rejection algorithm.
Ke Wang, Xianrong Wan, Jianxin Yi, Yucheng Yi   +3 more
doaj   +1 more source

DoA Estimation via Unlimited Sensing

2020 28th European Signal Processing Conference (EUSIPCO), 2021
Direction-of-arrival (DoA) estimation is a mature topic with decades of history. Despite the progress in the field, very few papers have looked at the problem of DoA estimation with unknown dynamic range. Consider the case of space exploration or near-field and far-field emitters.
Samuel Fernández-Menduiña, Felix Krahmer, Geert Leus, Ayush Bhandari   +3 more
openaire   +4 more sources

Toward Predictable Nanomedicine: Current Forecasting Frameworks for Nanoparticle–Biology Interactions

Advanced Intelligent Discovery, EarlyView.
Predictive models successfully screen nanoparticles for toxicity and cellular uptake. Yet, complex biological dynamics and sparse, nonstandardized data limit their accuracy. The field urgently needs integrated artificial intelligence/machine learning, systems biology, and open‐access data protocols to bridge the gap between materials science and safe ...
Mariya L. Ivanova, Michael Nicholls, Nicola Russo, Gueorgui Mihaylov, Konstantin Nikolic   +4 more
wiley   +1 more source

Large Direction-of-Arrival Mismatch Correction for Adaptive Beamforming

IEEE Access, 2022
Direction-of-arrival (DOA) mismatch can degrade the performance of adaptive beamforming algorithms. Thus, a projection method is proposed to correct this mismatch.
Lin Chang, Hua Yang, T. Aaron Gulliver, Shizhe Tan, Yan Wang   +4 more
doaj   +1 more source

Gridless DOA Estimation With Multiple Frequencies

IEEE Transactions on Signal Processing, 2023
Direction-of-arrival (DOA) estimation is widely applied in acoustic source localization. A multi-frequency model is suitable for characterizing the broadband structure in acoustic signals. In this paper, the continuous (gridless) DOA estimation problem with multiple frequencies is considered.
Yifan Wu 0015, Michael B. Wakin, Peter Gerstoft   +2 more
openaire   +4 more sources

Metabolic fate of drugs of abuse and new psychoactive substances: A pilot study on a novel workflow using a zebrafish embryo model combined with human microdosing

British Journal of Clinical Pharmacology, EarlyView.
Aim The aim of this study was to develop a novel workflow to identify human urine biomarkers for drugs of abuse and new psychoactive substances. Metabolites of amphetamine, cocaine, LSD, MDMA, methamphetamine, THC, MDMB‐CHMICA, and MDPPP were first identified in a zebrafish embryo (ZE) metabolism study followed by comparison to most abundant human ...
Simon K. Wellenberg, Tanja M. Gampfer, Lea Wagmann, Philip Schippers, Jennifer Herrmann, Rolf Müller, Folker Westphal, Markus R. Meyer   +7 more
wiley   +1 more source

Robust estimations of DOA and source number with strong and weak signals coexisting simultaneously based on a sparse uniform array

The Journal of Engineering, 2019
For the problem of the direction-of-arrival (DOA) and source number estimations with coexisting strong and weak signals, a new method for robust estimations of DOA and the number of sources based on an optimized broad band sparse array is proposed.
Qingyan Liu, Cao Zeng, Shidong Li, Zhiwei Yang, Guisheng Liao   +4 more
doaj   +1 more source

Epileptic arousals: A neglected clinical entity

Epilepsia, EarlyView.
Abstract Objective Epileptic arousals (EAs) are seizures characterized solely by arousal from sleep. EAs are unrecognized in current seizure classifications. Their subtle semiology and inconsistently detectable ictal activity in scalp electroencephalography (EEG) complicate differentiation from physiological arousals (PAs). This study characterizes EAs
Lea Fisel, Nóra Pető, Sotirios Kalousios, Nicolas Zabler, Armin Brandt, Peter C. Reinacher, Dieter Riemann, Mohammad F. Khazali, Andreas Schulze‐Bonhage   +8 more
wiley   +1 more source

Parametric Models for Doa Trajectory Localization

ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2022
Directions of arrival (DOA) estimation or localization of sources is an important problem in many applications for which numerous algorithms have been proposed. Most localization methods use block-level processing that combines multiple data snapshots to estimate DOA within a block. The DOAs are assumed to be constant within the block duration. However,
Ruchi Pandey, Santosh Nannuru
openaire   +2 more sources