| 避雷针对天气雷达回波影响的研究 |
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| 引用本文： | 李祥超,周中山,陈则煌,陈璞阳,叶挺.避雷针对天气雷达回波影响的研究[J].南京气象学院学报,2015,7(5):414-421. |
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| 作者姓名： | 李祥超 周中山 陈则煌 陈璞阳 叶挺 |
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| 作者单位： | 南京信息工程大学 中国气象局气溶胶-云-降水重点开放实验室, 南京, 210044;南京信息工程大学 中国气象局气溶胶-云-降水重点开放实验室, 南京, 210044;南京信息工程大学 中国气象局气溶胶-云-降水重点开放实验室, 南京, 210044;南京信息工程大学 中国气象局气溶胶-云-降水重点开放实验室, 南京, 210044;南京信息工程大学 中国气象局气溶胶-云-降水重点开放实验室, 南京, 210044 |
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| 基金项目： | 国家自然科学基金(41075025);大气科学与环境气象实验教学中心科研基金(SXJC2014A02) |
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| 摘 要： | 针对避雷针对天气雷达回波影响的问题,通过对天气雷达的盲区及雷达散射截面(RCS)的理论分析,利用HFSS仿真软件及实验的方法,研究水平极化下,不同材料不同尺寸的避雷针的雷达散射截面,结论是:在相同材料避雷针及相同雷达波长情况下,避雷针高度、半径与其雷达散射截面呈正相关;在相同雷达波长情况下,避雷针为理想金属的雷达散射截面比塑钢与理想金属组合材料的雷达散射截面大;实验结果表明避雷针架设在X波段多普勒天气雷达天线附近时,对雷达回波造成的影响可忽略不计.研究结果为在天气雷达附近架设避雷针提供了理论和实验依据,具有应用价值.
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| 关 键 词： | 避雷针 天气雷达 HFSS仿真 雷达回波 雷达散射截面 |
| 收稿时间： | 2014/8/5 0:00:00 |
On the effect of lightning rod on weather radar echo |
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| LI Xiangchao,ZHOU Zhongshan,CHEN Zehuang,CHEN Puyang and YE Ting.On the effect of lightning rod on weather radar echo[J].Journal of Nanjing Institute of Meteorology,2015,7(5):414-421. |
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| Authors: | LI Xiangchao ZHOU Zhongshan CHEN Zehuang CHEN Puyang and YE Ting |
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| Institution: | Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044 |
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| Abstract: | This paper carries out theoretical analysis on blind area of meteorological radar and the Radar Cross Section (RCS),in order to address the effect of lightning rod on radar echo.The RCS of lightning rods with different materials and sizes are studied by HFSS simulation and experiment under horizontal polarization.The simulation results show that,given the same rod material and radar wavelength,the RCS is positively related with the rod height and radius;given the same radar wavelength,the RCS is larger by rod with perfect metal than that with combined material of plastic steel and perfect metal.The experiment result indicates that the effect of lightning rod on weather radar echo can be ignored when the rod is installed near the X band Doppler radar.The result provides theoretical and practical reference for the installation of lightning rod near meteorological radar. |
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| Keywords: | lightning rod weather radar HFSS simulation radar echo Radar Cross Section |
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