Results 141 to 150 of about 507,465 (200)
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IEEE Antennas and Wireless Propagation Letters, 2015
A novel array configuration for improving the direction-finding (DF) accuracy of an interferometer DF system is presented. The interferometer DF system that uses a single array configuration provides a high DF accuracy over a wide frequency range. However, the DF accuracy in the low-frequency range for this array configuration is lower than that of the
Jung-Hoon Lee, Jong-Myung Woo
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A novel array configuration for improving the direction-finding (DF) accuracy of an interferometer DF system is presented. The interferometer DF system that uses a single array configuration provides a high DF accuracy over a wide frequency range. However, the DF accuracy in the low-frequency range for this array configuration is lower than that of the
Jung-Hoon Lee, Jong-Myung Woo
openaire +2 more sources
A low cost HF direction finding antenna array simulator for verification of HF-DF receivers
2014 IEEE AUTOTEST, 2014Field tests of High Frequency (HF)-Direction Finding (DF) receiver often require deployment of the antennas and transmission of a test signal. It is a difficult task for most of the HF-DF receiver depending on number of the antennas and the distance between them.
Neriman Ergezer, Halil Nayir
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Accurate Direction Finding for Shipborne HFSWR Through Platform Motion Compensation
IEEE Transactions on Geoscience and Remote Sensing, 2023Shipborne high-frequency surface wave radar (HFSWR) plays a crucial role in vessel target detection due to its mobility and flexibility in marine surveillance.
Cheng Wang +4 more
semanticscholar +1 more source
Journal of Lightwave Technology, 2023
We propose and demonstrate a deep learning-assisted photonic approach for measuring the angle-of-arrival (AOA) with high-precision, which is suitable for long-baseline direction finding (DF).
Yin Li +5 more
semanticscholar +1 more source
We propose and demonstrate a deep learning-assisted photonic approach for measuring the angle-of-arrival (AOA) with high-precision, which is suitable for long-baseline direction finding (DF).
Yin Li +5 more
semanticscholar +1 more source
IEEE Antennas and Wireless Propagation Letters, 2023
A single helicopter-based high frequency (HF) antenna is proposed for direction finding (DF) using rotor-blade modulation. Without integrating additional antenna structures, a landing gear is utilized as a coupling element to excite a combination of ...
K. Ren
semanticscholar +1 more source
A single helicopter-based high frequency (HF) antenna is proposed for direction finding (DF) using rotor-blade modulation. Without integrating additional antenna structures, a landing gear is utilized as a coupling element to excite a combination of ...
K. Ren
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation
The inborn spectral-spatial decomposition property of leaky-wave antennas (LWAs) makes them well-suitable for low-cost direction-finding (DF) applications.
Dongze Zheng +6 more
semanticscholar +1 more source
The inborn spectral-spatial decomposition property of leaky-wave antennas (LWAs) makes them well-suitable for low-cost direction-finding (DF) applications.
Dongze Zheng +6 more
semanticscholar +1 more source
Watson–Watt Direction Finding With Transfer Learning-Based Calibration
IEEE Antennas and Wireless Propagation Letters, 2023A compression of an entire four-element Watson-Watt direction finding (DF) process, including calibration, into a single neural network based system is introduced.
Gaeron R. Friedrichs +3 more
semanticscholar +1 more source
Antiambiguity Direction Finding by Harmonics' Amplitudes With Two-Element Time-Modulated Array
IEEE Antennas and Wireless Propagation LettersA novel antiambiguity method is proposed to eliminate the mirror-image ambiguity generated in direction finding (DF) with the two-element time-modulated array based simply on harmonic amplitude. When the time delay of the two modulation sequences and the
Shiyuan Li +3 more
semanticscholar +1 more source
Optical Direction-Finding Based on Silicon Photonic Integrated Circuits
Journal of Lightwave Technology, 2023In this paper, a high accuracy direction-finding (DF) system based on silicon photonic integrated circuits (PIC) is proposed. The accurate direction of a target can be determined by its position in the reconstructed image obtained by spatial frequency ...
Siyuan Liu +8 more
semanticscholar +1 more source
Shipborne HFSWR Direction-Finding Method for Target Detection Based on Correction Matrix
IEEE Geoscience and Remote Sensing LettersBecause of the influence of various factors, such as platform motion, antenna error, clutter, and noise interference, the direction finding (DF) of targets using shipborne high-frequency surface wave radar (HFSWR) becomes extremely difficult, which poses
Cheng Wang +4 more
semanticscholar +1 more source