- Volume 27 Issue 4
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Design and Manufacture of FMCW Radar with Multi-Frequency Bandwidths
다중 대역폭을 갖는 FMCW 레이다 송수신기 설계 및 제작
- Hwang, Ji-hwan (School of Earth and Environmental Science, Seoul National University) ;
- Kim, Seung Hee (School of Earth and Environmental Science, Seoul National University) ;
- Kang, Ki-mook (School of Earth and Environmental Science, Seoul National University) ;
- Kim, Duk-Jin (School of Earth and Environmental Science, Seoul National University)
- Received : 2015.11.16
- Accepted : 2016.03.09
- Published : 2016.04.30
Design of X-band frequency FMCW based imaging radar with multi-resolutions and performances of the self-manufactured radar system are presented in this study. In order to implement the multi-bandwidths, a ramp sequence of the FMCW signal is consisting of two kinds of 'saw-tooth' waveform with different bandwidth, and a receiver circuit consisting of L-band source and frequency converter circuit is used to effectively extract spectra of beat-frequency from the received signal of X-band frequency. The system setups for performance measurement of self-manufactured radar system are maximum output power of 35 dBm, sampling frequency of 1.2 MHz and sweep time of 1 ms. Then, the measured resolutions of the modulated signal having bandwidth of 500 MHz and 300 MHz in range & azimuth-direction are (0.28 m, 0.26 m) and (0.44 m, 0.27 m), respectively.
Supported by : 한국연구재단
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