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Wideband vertically polarized omnidirectional antennas for direction finding (DF) system
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014In this work, wideband vertically polarized omnidirectional antenna candidates for a direction finding (DF) system are presented, which operate over frequency spectrum between 100 MHz to 1300 MHz (frequency ratio: 13:1). Two antenna solutions based on Spirograph monopole and bow-tie monopole were designed, developed and experimentally verified. To ease
Satish K Sharma +5 more
openaire +2 more sources
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
openaire +2 more sources
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
openaire +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
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
Wideband Machine-Learning-Based Amplitude-Only Direction Finding With Spiral Antennas
IEEE Transactions on Antennas and Propagation, 2023A 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 +2 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
Direction Finding by Space–Time-Modulated Digital Metasurface With Harmonics’ Amplitude Correlation
IEEE Transactions on Antennas and PropagationThe 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 +5 more
semanticscholar +1 more source