调频连续波技术在气象雷达中的应用

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Abstract This paper proposes the application of frequency modulated continuous wave technology in weather detection radar to obtain high detection performance and high reliability of equipment.Firstly,the operating principle of the system is introduced.The system adopts dual antennas with separate transmitter and receiver simultaneously transmitting and receiving electromagnetic wave.Two-dimensional FFT is performed to process I/Q data and the spectrum are accumulated to achieve a better detection sensitivity.The distance,intensity and Doppler calibrations are applied to improve the precision and accuracy.Then,the detection performance of the developed radar is compared with that of the traditional radar,and the results show that the detection refinement of FMCW meteorological radar is larger than that of pulse radar,which effectively compensates for the low space-time density of traditional sounding radar.

Key words： FMCW two-dimensional FFT automatic calibration meteorological radar

Received: 18 November 2019

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TN959.4

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	Wu Jun

Cite this article:

Wu Jun. Application of frequency modulated continuous wave in weather radar[J]. Meteorological Hydrological and Marine Instrument, 2020, 37(3): 64-68.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2020/V37/I3/64

[1]	KATOH K-MAFFT:a novel method for rapid multiple sequence alignment based on fast Fourier transform[J].Nuclc Acids Research,2002,30(14):3059-3066.
[2]	PENG Z,JOSÉ MARÍA M F,TANG Y,et al-A portable FMCW interferometry radar with programmable low-if architecture for localization isar imaging and vital sign tracking [J].IEEE Transactions on Microwave Theory and Techniques,2017,65(4):1334-1344.
[3]	王勇,吴金君,田增山,等.基于FMCW雷达的多维参数手势识别算法[J].电子与信息学报,2019,41(4):65-72.
[4]	ARIFFIN N F M,ISMAIL A F,ISA F N M,et al-Assembly of an S-band FMCW Doppler radar system for improved pedestrians detection[J].International Journal of Multimedia and Ubiquitous Engineering,2017,12(3):65-74.
[5]	NILS K,KNEIFEL S,ULRICH L,et al-A W-band radar-radiometer system for accurate and continuous monitoring of clouds and precipitation[J].Journal of Atmospheric and Oceanic Technology,2017,34(11):2375-2392.
[6]	刘贺.线性调频连续波雷达信号处理研究及数据分析[D].成都:西南交通大学,2016.
[7]	史永彬,于蒙.VM-7衰减校准系统的量程拓展方法研究[J].仪器仪表标准化与计量,2016,32(1):39-41.
[8]	王月鹏,赵国庆.二维FFT算法在LFMCW雷达信号处理中的应用及其性能分析[J].电子科技,2005,188(5):25-28,32.