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1.EXTRACTION OF THE DOPPLER VELOCITY SPECTRAL WIDTH FROM CONVENTIONAL INCOHERENT WEATHER ECHOES——AN ANALYSIS OF THE FLUCTUATING SPECTRUM OF ECHO INTENSITY
用非相干的常规天气雷达提取多普勒速度谱宽——回波强度涨落谱分析收藏指正
2.Based on data of Radar echoes of hailstone clouds covered ove r 667hm2 during 1996 to 2003 in Aksu area,aralyaed the weather system typies,mot ion paths of heavy hailstone clouds.
利用阿克苏地区1996～2003年的冰雹落区覆盖面积达667hm2以上的个例的雷达资料,进行统计分析,得出强冰雹天气背景下的天气系统类型、冰雹路径,并提出相应的防御对策。收藏指正
3.In this paper the fluctuating spectrum and its spectral width are estimated by fast Fourier transformation of the discrete sample of precipitation echoes at a specified position with a microcomputer(Apple Ⅱ) connected with a home-made incoherent weather radar 713. Based on the relation between fluctuating spectrum and Doppler spectrum, calculation has been performed for the width and shape typical of the Doppler velocity spectrum, which are very useful in meteorology.
本文在国产的非相干的713天气雷达上,对某一固定地点的降水回波进行了离散取样,应用微机(APPLE.Ⅱ)对所获取的离散样本作傅立叶变换(FFT),得到回波强度的涨落谱和谱宽。 然后根据涨落谱与多普勒谱之间的确定关系,计算出在气象上非常有用的多普勒速度谱宽和典型的多普勒谱形。收藏指正
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