| Development of the Planar Active Phased Array Radar System with Real-time Adaptive Beamforming and Signal Processing |
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Kwan Sung Kim, Min Joon Lee, Chang Sik Jung, Dong Jin Yeom |
| 실시간으로 적응빔형성 및 신호처리를 수행하는 평면능동위상배열 레이더 시스템 개발 |
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김관성, 이민준, 정창식, 염동진 |
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국방과학연구소 |
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| Abstract |
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Interference and jamming are becoming increasing concern to a radar system nowdays. AESA(Active Electronically Steered Array) antennas and adaptive beamforming(ABF), in which antenna beam patterns can be modified to reject the interference, offer a potential solution to overcome the problems encountered. In this paper, we've developed a planar active phased array radar system, in which ABF, target detection and tracking algorithm operate in real-time. For the high output power and the low noise figure of the antenna, we've designed the S-band TRMs based on GaN HEMT. For real-time processing, we've used wavelenth division multiplexing technique on fiber optic communication which enables rapid data communication between the antenna and the signal processor. Also, we've implemented the HW and SW architecture of Real-time Signal Processor(RSP) for adaptive beamforming that uses SMI(Sample Matrix Inversion) technique based on MVDR(Minimum Variance Distortionless Response). The performance of this radar system has been verified by near-field and far-field tests. |
| Key Words:
AESA, Adaptive Bemaforming, Planar Active Phased Array, TRM(Transmitter and Receiver Module), GaN HEMT(Gallium Nitride High Electron Mobility Transistor), Wavelength Division Multiplexing |
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