| 基于正交多项式拟合的风廓线雷达风谱识别 |
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| 引用本文： | 周旭辉,马杰良,吴蕾,高玉春,柴秀梅.基于正交多项式拟合的风廓线雷达风谱识别[J].现代雷达,2011(11). |
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| 作者姓名： | 周旭辉 马杰良 吴蕾 高玉春 柴秀梅 |
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| 作者单位： | 南京信息工程大学信息与控制学院;中国气象局气象探测中心;湖南省气象技术装备中心;南京信息工程大学电子与信息工程学院; |
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| 基金项目： | 中国气象局气象探测中心公益性行业(气象)科研专项基金资助项目(GYHY200906039) |
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| 摘 要： | 风廓线雷达是一种以大气湍流为主要探测对象的晴空测风雷达,由于大气湍流对电磁波的散射非常微弱,湍流回波常常被淹没,特别是在降水条件下更是如此。为了能准确识别湍流回波提高谱矩估计精度,文中提出了基于正交多项式拟合的风谱识别方法。结果表明,该方法在降水天气下能很好地保留湍流回波信息,在风廓线雷达谱数据处理中取得了良好的效果,具有很大的实用价值。
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| 关 键 词： | 风廓线雷达 正交多项式拟合 谱数据处理 湍流回波 |
Wind Spectra Identification of the WPR Based on Orthogonal Polynomial Fitting |
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| ZHOU Xu-huia,,MA Jie-liangb,WU Lei,GAO Yu-chun,CHAI Xiu-mei.Wind Spectra Identification of the WPR Based on Orthogonal Polynomial Fitting[J].Modern Radar,2011(11). |
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| Authors: | ZHOU Xu-huia MA Jie-liangb WU Lei GAO Yu-chun CHAI Xiu-mei |
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| Affiliation: | ZHOU Xu-hui1a,2,3,MA Jie-liang1b,WU Lei2,GAO Yu-chun2,CHAI Xiu-mei2(1.a.School of Information and Control,b.School of Electronic and Information Engineering,Nanjing University of Information Science amd Technology,Nanjing 210044,China)(2.Atmospheric Observation Technical Center of CMA,Beijng 100081,China)(3.Meteorological Technical Equipment Center of Hunan,Changsha 410007,China) |
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| Abstract: | Wind profiler is a kind of clear air radar,object.The electromagnetic scattering of atmospheric turbulence is extremely weak,so the turbulence echo will be easily submerged,especially under the condition of precipitation.In order to identify the turbulent flow and improve the accuracy of the spectra moment evaluation,this paper puts forward a wind spectrum identification method based on orthogonal polynomials fit.Practice proves that it is a good method to reserve the turbulence information while smoothing ... |
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| Keywords: | wind profile radar orthogonal polynomial fitting spectra data processing turbulence echo |
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