| Autor: |
김현동, 최남우, 김상수, 전성천, 김경태, 최인오 |
| Předmět: |
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| Zdroj: |
Journal of Korean Institute of Electromagnetic Engineering & Science / Han-Guk Jeonjapa Hakoe Nonmunji; Aug2024, Vol. 35 Issue 8, p656-666, 11p |
| Abstrakt: |
Electronic warfare equipment estimates the azimuth and elevation of an unknown target by processing radar echoes received from monopulse or array antennas and interrupts radar sensing by transmitting jamming signals to the target. However, state-of-the-art targets maneuver at low altitudes in a sea surface environment to deliberately produce interference through multi-path, which poses a significant challenge for accurately estimating the estimation of the elevation angle. In this study, we propose an algorithm to accurately estimate the elevation angle of a low-altitude target despite the presence of a few arrays. Assuming that the sampled complex echoes are obtained after down-converging from the X-band (i.e., 10 GHz) to the base band, the proposed method demodulates the unknown linear frequency modulation using particle swarm optimization (PSO) and estimates the elevation angle by exploiting the new Fourier relationship between the wavelength and elevation angle. The simulation results suggest that our proposed method can successfully estimate the elevation angle for low-altitude maneuvering targets in a sea-surface environment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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