Manufacture and application of Sband Radar system based

Manufacture and application of S-band Radar system based on the MIT Cantenna 이훈열, 지영훈 강원대학교 지구물리학과 Department of Geophysics, Kangwon National University

1. 서 론 2. 기본원리 3. Cantenna의 구조 4. 실험결과 5. 결 론 Department of Geophysics, Kangwon National University

õ Department of Geophysics, Kangwon National University

õ Department of Geophysics, Kangwon National University

õ Department of Geophysics, Kangwon National University

Transmitter & Receiver RF Parts Electronic Parts Department of Geophysics, Kangwon National University

Function Generator(FG) Amplifier Department of Geophysics, Kangwon National University

Voltage Controlled Oscillator. Low Attenuator Noise Amplifier Splitter Low Noise Amplifier Mixer Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

사용전원 AA 건전지 8개 가용주파수 2. 25 ~ 2. 59 GHz 최대대역폭 334 MHz 편파 VV 빔폭 63˚ (2. 5 GHz 기준) õ 이 연구에서는 중심주파수 2. 4 GHz, 대역폭 110 MHz의 chirp 신호와 2. 5 GHz의 연속파를 사용 õ Doppler, range radar 및 SAR imaging 세 가지의 모드 Department of Geophysics, Kangwon National University

1. Doppler Radar õ 시내에서 운행하 는 차량을 대상으 로 속도를 측정 õ 측정결과 약 45 km/h로 측정됨 Department of Geophysics, Kangwon National University

2. Range Radar Running target õ 움직이는 두 타겟 을 대상으로 실험 Walking target õ 거리가 40 m 이상 멀어지면 출력한 계로 인하여 감지 가 어려움 Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

3. SAR Imaging Center frequency 2. 5 GHz Bandwidth 110 MHz Pulse time 0. 02 s Scan length 2. 4 m Scan step 0. 04 m Range resolution 1. 3 m Angular resolution 1. 5 ˚ Sampling frequency 44100 Hz õ 평면 벽과 광장을 대상 으로 촬영 õ 광장을 촬영 할 시 입사 각을 69 ˚로 촬영 Department of Geophysics, Kangwon National University

õ 50 m 거리에 있는 건물의 벽면을 대 상으로 실시 õ 110 m 에 다중반 사가 확인됨 Department of Geophysics, Kangwon National University

õ 옥상에서 광장으 로 촬영 õ 60 m, 110 m 거리 의 건물의 벽면 확 인 Department of Geophysics, Kangwon National University

Experiment 2 Experiment 1 Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University

Department of Geophysics, Kangwon National University