Results 151 to 160 of about 507,465 (200)

Wideband Machine-Learning-Based Amplitude-Only Direction Finding With Spiral Antennas

IEEE Transactions on Antennas and Propagation, 2023
A method for performing amplitude-only direction finding (DF) with a multiarm spiral antenna is demonstrated over multioctave (1.5–6 GHz) bandwidth, with 360° coverage in azimuth and 100° total coverage in elevation.
Gaeron R. Friedrichs, M. Elmansouri, D. Filipović   +2 more
semanticscholar   +1 more source

Large FoV Direction-Finding System Based on a Small-Aperture Phase Mode Antenna and its Applications on UAVs

IEEE Internet of Things Journal
Unmanned aerial vehicles (UAVs), serving as small mobile platforms, are well-suited for emitter detection and localization tasks in dynamic environments.
Xudong Tang, Xiaonan Zhao, Han Zhou, Jun-ping Geng, Jingzheng Lu, Rui Zhao, Xuepeng Li, Enyu Li, Heci Liu, Chong He, R. Jin, Guolin Tong   +11 more
semanticscholar   +1 more source

Direction Finding Method for Fast Beam Alignment in Wireless Communication Systems

Information and Communication Technology Convergence, 2023
This paper proposes a simple direction finding (DF) method which aims to realize efficient beam management in mm-wave and THz frequency-band communications where a beamforming is essential. In the proposed method based on the DF built by the synthesis of
Seon-Ae Kim, Heesang Chung, Young-Hoon Kim   +2 more
semanticscholar   +1 more source

Direction Finding by Space–Time-Modulated Digital Metasurface With Harmonics’ Amplitude Correlation

IEEE Transactions on Antennas and Propagation
The application of digital metasurface (DM) in direction finding (DF) has been widely studied. However, numerous nonideal properties of practical DM are difficult to be modeled and decrease the DF accuracy.
Shiyuan Li, A. Cao, Chi Zhang, Xudong Bai, Qingqing Wu, Chong He   +5 more
semanticscholar   +1 more source

A Robust Time Modulated Array Direction Finding Method with Error Compensation for Picket Fence Effect

IEEE Asia-Pacific Conference on Antennas and Propagation
A novel time-modulated array (TMA) direction finding (DF) method based on interpolated DFT (ipDFT) is proposed to compensate for the DF errors induced by the Picket Fence Effect.
Chi Zhang, Shiyuan Li, Liang Kong, Yunlong Cao, Yiming Zheng, Chong He   +5 more
semanticscholar   +1 more source

Using the 3-D Vector Antenna as the Short-Range Direction-Finding Sensor: Primary Theory and Experimental Proof

IEEE Sensors Letters, 2023
This letter showcases the design, implementation, and verification of a vector antenna (VA) capable of direction finding. By adopting the tapered slot (also known as Vivaldi) element as the constitutive VA element and a four-season layout, the VA in this
Hadeel Obaid, C. Morlaas, Bo Sun, Matias Turunen, Simona Lohan, Bo Tan   +5 more
semanticscholar   +1 more source

Direction Estimation of a Jamming Signal Using an Optimized Direction-Finding Algorithm

2025 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
This paper presents a low-complexity and efficient direction-finding (DF) algorithm for accurately estimating the direction of jamming signals in GPS-based defense systems.
S. Shashank, Vinay B. Narayane, Paresh Saxena, Ashutosh Baheti   +3 more
semanticscholar   +1 more source

Wideband Direction Finding of UAVs/Drones using Log-periodic Antenna Array

International Conference on Autonomic and Trusted Computing
The proliferation of unmanned aerial vehicles (UAVs) has raised significant security and surveillance challenges, necessitating high-precision direction-finding (DF) techniques for effective detection and tracking. This paper presents a novel approach to
Van Long Do, Binh Minh Tran, Minh Tung Duong, T. B. Nguyen   +3 more
semanticscholar   +1 more source

In-Flight Calibration and Testing of Phase Interferometry Based Direction Finding Performance for Airborne Radar Warning Receivers

2023 IEEE AUTOTESTCON, 2023
Radar warning receivers (RWR) are used in electronic warfare to sense radar threats by measuring electromagnetic signals. RWRs employ direction-finding (DF) methods for estimating the direction of arrival of a measured radar signal.
Hüseyin Eren Çamlibel, Tahir Doğan, Sami Tokgöz   +2 more
semanticscholar   +1 more source

Practical Considerations of a Multi-Port Leaky-Wave Antenna Array for Direction Finding

European Conference on Antennas and Propagation
An array of multi-port leaky-wave antennas (LWAs) for direction finding (DF) in the X-band is proposed based on a printed double-stub configuration and analyzed in terms of practical considerations of range and detector sensitivity.
David F. Hardy, K. Macdonell, Shulabh Gupta   +2 more
semanticscholar   +1 more source