Results 21 to 30 of about 3,980,275 (286)

Deep learning-based direction finding in the presence of direction-dependent mutual coupling

open access: yesICT Express, 2023
In this paper, the problem of direction finding is considered for millimeter-wave communication with direction-dependent mutual coupling. For direction-of-arrival estimation, a low-complexity deep neural network (DNN)-based regression model is proposed ...
Kyungsik Seo, Jaekoo Lee, Song Noh
doaj   +1 more source

Finding Direction in the Search for Selection [PDF]

open access: yesJournal of Molecular Evolution, 2016
Tests for positive selection have mostly been developed to look for diversifying selection where change away from the current amino acid is often favorable. However, in many cases we are interested in directional selection where there is a shift toward specific amino acids, resulting in increased fitness in the species.
Grant Thiltgen   +2 more
openaire   +5 more sources

Dielectric Resonator Direction Finding Antenna

open access: yesInternational Journal of Antennas and Propagation, 2011
The idea of using a cylindrical dielectric resonator antenna for mechanical direction finding and target tracking is presented. The hybrid feeding network of the receiving antenna comprised two ports: one for the broadside-type sum pattern and another ...
Laila Hady Salman   +2 more
doaj   +1 more source

Bio-Inspired Miniature Direction Finding Acoustic Sensor. [PDF]

open access: yesSci Rep, 2016
The article of record as published may be found at http://dx.doi.org/10.1038/srep29957A narrowband MEMS direction finding sensor has been developed based on the mechanically coupled ears of the Ormia Ochracea fly.
Wilmott D, Alves F, Karunasiri G.
europepmc   +2 more sources

Collaborative Solutions for Interference Management in GNSS-Based Aircraft Navigation

open access: yesSensors, 2020
Nowadays, the Global Navigation Satellite Systems (GNSS) technology is not the primary means of navigation for civil aviation and Air Traffic Control, but its role is increasing. Consequently, the vulnerabilities of GNSSs to Radio Frequency Interference,
Mario Nicola   +5 more
doaj   +1 more source

adio Direction Finding Collection Finding Aid

open access: yes, 2018
This finding aid describes the "Abstracts on Radio Direction Finding / Full text documents on Radio Direction Finding" collection at the Dudley Knox Library.
Goncalves, George
core   +2 more sources

Research on the Deception Mechanism of Frequency Diverse Array Radar in Radar Reconnaissance and Direction Finding [PDF]

open access: yesHangkong bingqi
In the ground attack mission, the attack plan needs to be formulated and distributed to the attack aircraft based on the threat source intelligence data obtained in advance with the help of the tactical mission planning system.
Zhang Jing, Wang Bo, Meng Guoxiang, Chen Shuangyan
doaj   +1 more source

Mode Directed Path Finding [PDF]

open access: yes, 2005
Learning from multi-relational domains has gained increasing attention over the past few years. Inductive logic programming (ILP) systems, which often rely on hill-climbing heuristics in learning first-order concepts, have been a dominating force in the area of multi-relational concept learning.
Irene M. Ong   +3 more
openaire   +2 more sources

Highly Accurate Two-Dimensional Direction Finding Using Cumulant

open access: yesIEEE Access, 2018
This paper proposes a new two-dimensional direction finding algorithm for estimating multiple non-Gaussian signals using cumulants. This new algorithm: 1) employs an array geometry consisting of a nine-element non-uniformly spaced cross-shaped sub-array ...
Chen Gu, Hong Hong, Xiaohua Zhu, Jin He
doaj   +1 more source

High-precision UUV direction-finding method based on communication awareness

open access: yesJournal of Ocean Engineering and Science
With the rapid advancement of underwater communication technologies, application scenarios for underwater direction finding and positioning have become increasingly diverse. However, the complex underwater propagation environment, noise interference, and
Lingling Zhang   +2 more
doaj   +1 more source

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