摘 要：天气雷达在航空气象领域一直发挥着重要作用。民航华东空管局引进的WRK200型C波段双偏振多普勒天气雷达为上海虹桥、浦东两场的航空气象短临预报以及监测预警提供了重要参考。自2014年建成投入使用以来，该雷达出现过发射放大单元故障、灯丝电源故障、固态调制器故障以及伺服系统故障等几次典型故障案例，本文通过总结分析现有故障案例，为天气雷达维护维修机务工作提供技术经验和参考。

关键词：航空气象；天气雷达；典型故障；维护维修

中图分类号：P412.25 文献标识码：A 文章编号：2096-4706（2018）08-0063-03

Abstract：Weather radar has been playing an important role in aviation meteorology. The WRK200 C band dual polarization Doppler weather radar introduced by the East China Civil Aviation Administration of Civil Aviation has provided an important reference for the short term forecast of aeronautical meteorology and monitoring and warning in Hongqiao and Pudong，Shanghai. Since it was put into use in 2014，the radar has appeared several typical failure cases such as the fault of transmitting and amplifying unit，the fault of the filament power supply，the fault of the solid-state modulator and the fault of the servo system. By summarizing and analyzing the existing fault cases，this paper provides the technical experience and reference for the maintenance and maintenance work of the weather radar.

Keywords：aviation meteorology；weather radar；typical faults；maintenance and repair

0 引 言

在航空領域，气象因素对飞行安全一直是重要的影响因子。同时，伴随着中国民航事业的快速发展，华东地区尤其是上海虹桥、浦东两场航班量快速增长，天气原因导致的航班不正点率也逐年攀升。在这种情况下，航空气象预报的高准确率、气象探测要素的高精确率以及气象产品多样化的高需求问题日益显现。多普勒天气雷达尤其是双极化雷达能为有效监测和预警暴雨、雹云、龙卷风和台风等灾害性天气提供重要帮助。

为此，上海虹桥机场于2014年引进芬兰Vaisala生产的WRK200型C波段双偏振多普勒天气雷达，该雷达除提供常规多普勒天气雷达提供的强度、速度、谱宽这些探测要素外，还可提供差分反射率、相关系数、差分相位、差分相位系数、线性退极化比等双偏振参数，从而得到更多、更准确的气象雷达产品。这为提高上海地区的航空气象临近短时预报准确率、有效实时监测预警服务提供了更加有力的探测技术支持。……