JKJ2型风廓线雷达TR组件失效对探测距离影响的初步分析  

Preliminary analysis for the effect of TR components failure on measuring height of JKJ2 wind profiler radar

作　　者：周红根 吴蕾[2] 乔贺 刘一峰[3] 康健 

机构地区：[1]江苏省气象探测中心,南京210009 [2]中国气象局气象探测中心,北京100086 [3]南京电子技术研究所,南京210039 [4]南京市气象局,南京210008

出　　处：《气象水文海洋仪器》2014年第4期38-41,共4页Meteorological,Hydrological and Marine Instruments

基　　金：国家自然科学基金青年科学基金项目(41105023):结合多尺度对称方位网格的模糊逻辑法在识别阵风锋关键特征中的研究;中国气象局公益性行业(气象)科研专项基金(GYHY200906040):新一代天气雷达测试与故障检测技术研究

摘　　要：风廓线雷达主要用于测量晴空大气湍流的速度、强度等参量,能够实时提供大气的三维风场信息。中国气象局布网的JKJ2型风廓线雷达采用标准分布式全固态有源相控阵技术设计,降低了系统(收发)损耗;采用逐行(逐列)移相扫描方式,加权方式灵活简单,天线性能达到最优状态。多达20路的相位加权,能获得极低的天线副瓣电平,有利于小尺度湍流变化探测,提高了探测数据的可信度。通过采用仿真技术,分析在10%的TR组件发射通道失效后,该雷达的天线性能变化及对雷达探测性能的影响情况。试验结果表明,当10%的TR组件失效时对雷达探测数据基本没有影响。Wind profiler radar is mainly used for the measurement of clear sky atmospheric turbulence parameters and gives a provision of real-time atmospheric 3Dwind field.The JKJ2 wind profiler radar in CMA radar network employs the standard distributed solid-state active phased-array technology to reduce system（transceiver）loss.By means of using row column phase scanning,it is flexible and simple weighting to approach the optimal antenna performance.Low antenna sidelobe level can be obtained by20 channels of phase weighting,in favor of small scale turbulence detection and improvement of the reliability of sounding data.If the failure of 10% TR components is assumed,based on the active phased wind profile radar,the effect of antenna performance and the impact on radar detection performance are simulated.The simulation results show that the radar sounding has little effect underthe condition of 10% TR components failure.

关 键 词：风廓线雷达 波束宽度 天线增益 TR组件 

分 类 号：TN957[电子电信—信号与信息处理]