| 一种机载前视风切变雷达的信号分析及仿真 |
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| 引用本文： | 魏耀,张兴敢,柏业超.一种机载前视风切变雷达的信号分析及仿真[J].南京大学学报(自然科学版),2011(1). |
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| 作者姓名： | 魏耀 张兴敢 柏业超 |
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| 作者单位： | 南京大学电子科学与工程学院;毫米波国家重点实验室; |
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| 基金项目： | 毫米波国家重点实验室(K200819) |
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| 摘 要： | 机载前视风切变雷达是飞机进行风切变探测和预警的重要工具.为了设计一种可输出风切变雷达仿真信号的风切变信号发生器,利用快速傅立叶变换(FFT)法分析某型机载前视风切变雷达的回波信号,分别用频谱估计法和经典功率谱估计法两种方法估计了雷达回波信号的多普勒频移,比较两种方法的优劣,进而选择经典功率谱估计法计算出风场的径向风速分布.建立均一化静止对称的风场模型仿真了风切变雷达的回波信号,从而设计出可输出风切变雷达仿真信号的风切变信号发生器,可满足机载气象雷达航空部附件维护和维修时对便携性和灵活性的需求.
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| 关 键 词： | 前视风切变雷达 风切变信号仿真 快速傅立叶变换 经典功率谱估计 |
Analysis and simulation of an airborne weather radar |
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| Wei Yao,Zhang Xing-Gan,Bai Ye-Chao.Analysis and simulation of an airborne weather radar[J].Journal of Nanjing University: Nat Sci Ed,2011(1). |
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| Authors: | Wei Yao Zhang Xing-Gan Bai Ye-Chao |
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| Affiliation: | Wei Yao1,2,Zhang Xing-Gan1,Bai Ye-Chao1,2(1.Department of Electronics Science and Engineering,Nanjing University,Nanjing,210093,China,2.State Key Laboratory of Millimeter Waves,210096,China) |
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| Abstract: | Airborne weather radar is important for detecting low altitude wind shear which is a major contributing factor in many airline crashes.Numerous accidents have occurred that were attributed to low-altitude wind shear,Research on the wind shear detection for airborne forward looking wind shear weather radar has important application value.Up to now,several methods have been proposed for wind shear signal processing,such as fast Fourier transform,pulse pair processing and so on.In industry,the most widely used... |
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| Keywords: | airborne weather radar windshear data simulate fast Fourier transform power spectrum estimation |
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