Results 11 to 20 of about 507,465 (200)
Research into the Influence of Millimeter-Wave Antennas on Direction Finding Errors by Phase Method
Известия высших учебных заведений России: Радиоэлектроника, 2023 Introduction. Direction finding errors degrade the performance of any direction finding system. In the case of a phase direction finder, the cause of errors, among other things, is related to the non-identity of the receiving channels.
I. D. Pavlov
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Evaluation Method and Design Guidance for Direction-Finding Antenna Systems [PDF]
IEEE Transactions on Antennas and Propagation, 2023 A deterministic evaluation procedure for multiport direction-finding (DF) antennas is proposed. It is based on a DF uncertainty parameter, which describes how well different directions of arrival and polarizations are distinguishable.
L. Grundmann, D. Manteuffel
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Cross-ambiquity function domain multipath channel parameter estimation [PDF]
, 2011 Cataloged from PDF version of article.A new array signal processing technique is proposed to estimate the direction-of-arrivals (DOAs), time delays, Doppler shifts and amplitudes of a known waveform impinging on an array of antennas from several distinct
Arikan, O., Guldogan, M. B.
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A Low Complexity Direction Finding System Based on a Six-Port Integrated MIMO Antenna System [PDF]
Jordanian Journal of Computers and Information Technology, 2016 In this paper, a low complexity microwave based direction finding (DF) system is presented. The proposed system consists of single six-port (SP) circuit integrated with a reconfigurable multiple-input-multiple-output (MIMO) antenna system. The SP circuit
Rifaqat Hussain +3 more
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The Direction Finding Ambiguity Analysis for 3 Element and 4 Element Phase Interferometer DF System
Journal of the Korea Institute of Military Science and Technology, 2014 ABSTRACT In this paper, we have proposed a novel method which can analysis the direction finding ambiguity analysis for array geometry in 3 channel and 4 channel multiple baseline direction finding system. Generally, the direction finding ambiguity in the 3 element and 4 element phase interferometer direction finding system is calculated by the ...
Jung-Hoon Lee, Jong-Myung Woo
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Not only the butterflies: managing ants on road verges to benefit Phengaris (Maculinea) butterflies [PDF]
, 2010 Obligate myrmecophilic butterfly species, such as Phengaris (Maculinea) teleius and P. nausithous, have narrow habitat requirements. Living as a caterpillar in the nests of the ant species Myrmica scabrinodis and M.
Gestel, R., van +3 more
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IEEE Access, 2022 This paper proposes the design of a gain enhanced single circular patch radiator (SCPR) with a cavity-backed structure using multiple substrate integrated waveguide (SIW) feeders for monopulse systems.
Sangwoon Youn +3 more
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A Novel Nonlinear LPDA Design for HF Direction Finding
International Journal of Antennas and Propagation, 2019 A novel design of log-periodic dipole array (LPDA) for high-frequency direction finding (DF) is presented. The traditional Carrel method employs fixed values of scale factor and spacing factors in LPDA designs. Here, we propose a design method which uses
Xiaofei Ren, Hu Li, Shuxi Gong
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Strongly Monotone Drawings of Planar Graphs [PDF]
, 2016 A straight-line drawing of a graph is a monotone drawing if for each pair of vertices there is a path which is monotonically increasing in some direction, and it is called a strongly monotone drawing if the direction of monotonicity is given by the ...
Felsner, Stefan +5 more
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Two Rapid Power Iterative DOA Estimators for UAV Emitter Using Massive/Ultra-Massive Receive Array
Drones, 2023 To provide rapid direction finding (DF) for unmanned aerial vehicle (UAV) emitters in future wireless networks, a low-complexity direction of arrival (DOA) estimation architecture for massive multiple-input multiple-output (MIMO) receiver arrays is ...
Yiwen Chen +10 more
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