Results 1 to 10 of about 1,693,030 (143)

Tensor Approach to DOA Estimation of Coherent Signals with Electromagnetic Vector-Sensor Array [PDF]

open access: yesSensors, 2018
This paper addresses the direction-of-arrival (DOA) estimation problem using a uniform rectangular array with electromagnetic vector-sensors in correlated/coherent signal environments. The polarization information is separated from the steering matrix to
Ming-Yang Cao   +3 more
doaj   +2 more sources

DOA estimation of multiple non-coherent and coherent signals using element transposition of covariance matrix

open access: yesICT Express, 2020
Up to date, investigation of direction of arrival (DOA) gains more effort on multiple signals rather than coherent signals, particularly coherent signals measured by non-uniform and circular arrays — which still remains room for exploration.
Van-Sang Doan, Dong-Seong Kim
doaj   +3 more sources

An Oblique Projection-Based Beamforming Method for Coherent Signals Receiving

open access: yesRemote Sensing, 2022
Within a complex sea or ground surface background, multipath signals are strongly correlated or even completely coherent, which leads to signal cancellation when conventional optimal beamforming is performed.
Yumei Guo   +4 more
doaj   +2 more sources

Direction-of-Arrival Estimation for Both Uncorrelated and Coherent Signals in Coprime Array

open access: yesIEEE Access, 2019
Direction-of-arrival (DOA) estimation in coprime array involves the problem that there is the coexistence of both uncorrelated signals and coherent signals in the multipath environment.
Haiyun Xu   +4 more
doaj   +3 more sources

An Enhanced Spatial Smoothing Technique of Coherent DOA Estimation with Moving Coprime Array

open access: yesSensors, 2023
This paper investigates the direction of arrival (DOA) estimation of coherent signals with a moving coprime array (MCA). Spatial smoothing techniques are often used to deal with the covariance matrix of coherent signals, but they cannot be used in sparse
Meng Yang   +3 more
doaj   +1 more source

Direction of Arrival Estimation and Highlighting Characteristics of Testing Wideband Echoes from Multiple Autonomous Underwater Vehicles

open access: yesSensors, 2023
Multiple autonomous underwater vehicles (AUVs) have gradually become the trend in underwater operations. Identifying and detecting these new underwater multi-targets is difficult when studying underwater moving targets. A 28-element transducer is used to
Xiaofeng Yin   +3 more
doaj   +1 more source

Using High-Order Particle Velocity Gradient Polarization Characteristics to Detect Underwater Coherent Interference

open access: yesJournal of Marine Science and Engineering, 2023
Detection of underwater coherent interference is necessary as its presence affects the estimation of the desired target. In this work, a method based on high-order particle velocity gradient polarization characteristics is proposed to distinguish the ...
Di Wu, Lanyue Zhang, Jia Wang, Xueru Hu
doaj   +1 more source

Efficient DOA Estimation for Wideband Sources in Multipath Environment

open access: yesRemote Sensing, 2022
A novel direction-of-arrival (DOA) estimator is proposed for the mixed uncorrelated and correlated wideband sources in the multipath environment. Firstly, the novel signal model is established using the aligned envelope technique. Next, the estimator can
Xiaoyu Zhang   +3 more
doaj   +1 more source

Spatiotemporal coherent summation of Ultra-Wideband chaotic radio pulses. Experiment [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this work is to experimentally prove the physical feasibility of coherent addition of chaotic signals (ultra-wideband chaotic radio pulses) in space and time.
Kuzmin, Lev Viktorovich   +3 more
doaj   +1 more source

DOA Estimation of Coherent Signals Based on EPUMA Method With Frequency Beam Scanning Leaky-Wave Antennas

open access: yesIEEE Access, 2023
A technique to estimate the DOAs of coherent sources using a passive frequency beam scanning leaky-wave antenna (FBS-LWA) with a subspace based method is presented.
Diyuan Xu   +4 more
doaj   +1 more source

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