马建立. 2019. 线性规划在X波段双线偏振多普勒天气雷达差分传播相移质控中应用[J]. 气象学报, (0):-, doi:10.11676/qxxb2019.023
线性规划在X波段双线偏振多普勒天气雷达差分传播相移质控中应用
Application of linear programming in differential propagation phase shift quality control for X band dual polarization doppler weather radar
投稿时间:2018-06-15  修订日期:2018-08-10
DOI:10.11676/qxxb2019.023
中文关键词:  线性规划,X波段双线偏振雷达,差分相移数据质量控制
英文关键词:Linear programming, X-band dual linear polarimetric radar, Differential phase data quality control
基金项目:
作者单位E-mail
马建立 中国气象局北京城市气象研究所 jlma@ium.cn 
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中文摘要:
      对X波段双线偏振多普勒天气雷达而言,差分传播相移 数据质量是影响雷达应用的关键因素,需要开展 的数据质量控制。首先利用相关系数 , 纹理和 纹理特征信息剔除非气象回波,然后采用一种新的方法—线性规划(Linear programming)来开展差分传播相移 的数据质量控制,文中比较分析了雷达原始 数据经过3、5、7点不同平滑点数对线性规划结果的影响,分析数据表明不同平滑点数对线性规划结果几乎无影响。将线性规划方法应用到北京组网的X波段双线偏振多普勒天气雷达差分传播相移 数据质量控制上,结果表明, 经过线性规划后,可以有效提升 数据质量,表现在:(1) 具有累积递增属性和差分传播相移率 的非负属性,与 和 应该具备的物理属性一致;(2)可以有效剔除因冰雹等大粒子产生的后向差分传播相移 对 的影响,提升 计算 准确度。
英文摘要:
      To X-band dual polarimetric doppler weather radar, data quality control of differential propagation phase shift is a key factor affecting radar application. In this paper, a new method, Linear Programming (LP), is used for data quality。The results of LP method used by X-band dual linear polarization doppler weather networking radars in Beijing are showing that is monotonic increasing and specific differential propagation phase shift is non- negative after LP,which are coinciding with the physical attributes of and ,it also can effectively eliminate the influence of the backward differential propagation phase shift caused by hail and other large particles after LP, improving the accuracy of calculated by .However, before linear programming for , it is needed to eliminate non-meteorological echo by using 、texture of and .The analysis data show that the raw data with 3, 5, and 7 smoothing points almostly have no impact on linear programming results
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