Results 21 to 30 of about 669,386 (303)

A review of system integration and current integrity monitoring methods for positioning in intelligent transport systems

open access: yesIET Intelligent Transport Systems, 2021
Applications of intelligent transportation systems are continuously increasing. Since positioning is a key component in these systems, it is essential to ensure its reliability and robustness, and monitor its integrity so that the required levels of ...
Tarek Hassan   +2 more
doaj   +1 more source

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

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

Joint segmentation of wind speed and direction using a hierarchical model [PDF]

open access: yes, 2007
The problem of detecting changes in wind speed and direction is considered. Bayesian priors, with various degrees of certainty, are used to represent relationships between the two time series.
Dobigeon, Nicolas, Tourneret, Jean-Yves
core   +1 more source

Finding hypernetworks in directed hypergraphs [PDF]

open access: yesEuropean Journal of Operational Research, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 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

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

Direction finding for an extended target with possibly non-symmetric spatial spectrum [PDF]

open access: yes, 2004
We consider the problem of estimating the direction of arrival (DOA) of an extended target in radar array processing. Two algorithms are proposed that do not assume that the power azimuthal distribution of the scatterers is symmetric with respect to the ...
Monakov, Andrei, Besson, Olivier
core   +1 more source

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

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   +1 more source

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