Results 61 to 70 of about 2,215 (175)

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

open access: yesInternational 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

Evaluation of Genetics in the Association Between Cardiorespiratory Fitness and Health

open access: yesScandinavian Journal of Medicine &Science in Sports, Volume 36, Issue 5, May 2026.
ABSTRACT We evaluated how much cardiorespiratory fitness (CRF)‐related genetics contribute to the risk of common noncommunicable diseases (NCDs) and mortality, and whether individuals with different levels of CRF and genetic predispositions differ in health characteristics.
L. Joensuu   +663 more
wiley   +1 more source

Polynomial Manifold Interpolation for Direction Finding in the Presence of Mutual Coupling

open access: yesIEEE Access, 2019
Direction-of-arrival (DOA) estimation in the presence of mutual coupling among the antennas is an important problem in direction finding systems. To address the mutual coupling issue, a polynomial manifold interpolation approach is proposed in this paper.
Hongtao Duan   +4 more
doaj   +1 more source

Satellite‐Based Detection of Methane Emissions From Permafrost Peatland Warming

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Column‐averaged methane (XCH4) observations spanning 2018–2023 by the Tropospheric Monitoring Instrument (TROPOMI) on the Sentinel‐5 Precursor satellite are assessed for evidence of methane (CH4) emissions from permafrost regions. Bi‐monthly TROPOMI XCH4 anomaly maps and soil temperature (Tsoil) anomaly maps from reanalysis data are generated ...
Ray Nassar   +7 more
wiley   +1 more source

Near-Field Monopulse DoA Estimation for Angle-Sensitive Proximity WiFi Readers

open access: yesIEEE Access, 2019
We study the effect of close-proximity in the estimation of the Direction-of-Arrival (DoA) using a monopulse antenna array system, with application to angle-sensitive proximity WiFi readers.
Jose Antonio Lopez-Pastor   +4 more
doaj   +1 more source

Research on 2-D Direction of Arrival (DOA) Estimation for an L-Shaped Array

open access: yesRemote Sensing
Lately, there has been a significant increase in interest in coprime array configurations, as they offer the advantage of generating more extensive array apertures and enhanced degrees of freedom when contrasted with standard linear arrays. This document introduces an innovative two-dimensional direction-of-arrival (2-D DOA) estimation technique ...
Kun Ye   +4 more
openaire   +2 more sources

Quantifying and Reducing the DOA Estimation Error Resulting from Antenna Pattern Deviation for Direction-Finding HF Radar

open access: yesRemote Sensing, 2017
High-frequency (HF) radars are routinely used for remotely sensing ocean surface currents. However, the performance of the most widely used direction-finding HF radar is degraded due to the effect of the inevitable deviations of actual antenna pattern on
Yeping Lai   +3 more
doaj   +1 more source

Effects of reference sound speed on underwater acoustic direction-of-arrival estimation with horizontal plane array [PDF]

open access: yesJASA Express Letters
Direction-of-arrival (DOA) estimation of an underwater acoustic target is usually dependent on the selection of reference sound speed. For a horizontal line array, severe error of DOA estimation is induced when reference sound speed diverges from phase ...
Feitong Chen   +6 more
doaj   +1 more source

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

open access: yesSensors
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   +5 more
doaj   +1 more source

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