Operational Monitoring of Radar Differential Reflectivity Using the Sun
Operational Monitoring of Radar Differential Reflectivity Using the Sun
复制标题
利用太阳对雷达差分反射率进行运行监测
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Tabary
中科院分区：
文献类型：
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作者：
I. Holleman;A. Huuskonen;R. Gill;P. Tabary
摘要提出了一种偏振天气雷达差分反射率偏差的日常监测方法。使用雷达操作扫描期间产生的极地体积数据中检测到的太阳信号。该方法是利用太阳监测低仰角天气雷达天线和雷达接收链方法的推广。这种“在线”方法非常适合于作战雷达网络中的常规应用。在线太阳监测可用于检查雷达天线的水平和垂直极化波瓣之间的一致性，这是高质量极化测量的先决条件。通过在垂直入射下执行在线太阳监测和雨水校准，可以解开差分接收器偏差和差分发射器偏差。来自Trappes（法国）和Bornholm（丹麦）偏振雷达的结果，证明了定期监测差分反射率偏差的重要性，...
Abstract A method for the daily monitoring of the differential reflectivity bias for polarimetric weather radars is presented. Sun signals detected in polar volume data produced during operational scanning of the radar are used. This method is an extension of that for monitoring the weather radar antenna pointing at low elevations and the radar receiving chain using the sun. This “online” method is ideally suited for routine application in networks of operational radars. The online sun monitoring can be used to check the agreement between horizontal and vertical polarization lobes of the radar antenna, which is a prerequisite for high-quality polarimetric measurements. By performing both online sun monitoring and rain calibration at vertical incidence, the differential receiver bias and differential transmitter bias can be disentangled. Results from the polarimetric radars in Trappes (France) and Bornholm (Denmark), demonstrating the importance of regular monitoring of the differential reflectivity bias, ...