Výsledky vyhledávání - "Ji-Hwan Yoon"

Akademický článek

Rejection of Surface Clutter in Far Sidelobes for Airborne Radars

Autor: Ji Hwan Yoon, Yeonhee Park, Ji Eun Roh

Publikováno v: Journal of Electromagnetic Engineering and Science, Vol 24, Iss 5, Pp 467-476 (2024)

In airborne radar, false alarms caused by surface clutter returns through antenna sidelobes need to be suppressed to detect the target of interest. Sidelobe blanking is widely used to reject false alarms. Ideally, an auxiliary antenna radiation patte

Externí odkaz: https://doaj.org/article/48dc73f75ce242ddbd834befcb6a5785

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Akademický článek

Clutter Rejection for FM Ranging Airborne Radar

Autor: Ji Hwan Yoon, Yongmin Kim

Publikováno v: Journal of Electromagnetic Engineering and Science, Vol 23, Iss 6, Pp 455-460 (2023)

In airborne radar, it is important to reject clutter signals to detect targets of interest. High pulse repetition frequency (HPRF) waveform provides robust detection performance in a clutter environment by separating clutter signals from the target e

Externí odkaz: https://doaj.org/article/eb41b8edc0d34814aa6127918a61ef3d

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Akademický článek

Multiple Step Interlaced Beam Scan to Minimize the Deviation of Radar Detection Performance

Autor: Ji Hwan Yoon, Yeonhee Park, Ji Eun Roh, Sung Chul Park

Publikováno v: Journal of Electromagnetic Engineering and Science, Vol 20, Iss 2, Pp 125-130 (2020)

For detection of targets, a radar conventionally scans a specified search volume with a fixed beam lattice of a specified beam spacing. With the fixed beam lattice, the detection performance of the radar within a unit beam lattice changes depending o

Externí odkaz: https://doaj.org/article/af2ff9d10c8742bdabb8d1315c7d46ab

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Akademický článek

Bandwidth Enhancement of Single-Layer Microstrip Reflectarrays with Multi-Dipole Elements

Autor: Ji Hwan Yoon, Young Joong Yoon

Publikováno v: Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 19, Iss 2, Pp 130-139 (2019)

The gain bandwidth limit of a single-layer microstrip reflectarray is analyzed using multi-dipole elements. By observing the reflection phase characteristics of the multi-dipole elements with different numbers of dipoles, it is shown how the bandwidt

Externí odkaz: https://doaj.org/article/1f727b4bbc4146ecb5afeb72b63dce6d

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