冰雪对大型阵列天线性能影响分析  

Effects of Ice and Snow on the Performance of Large Array Antenna

作　　者：张立新[1] 张玉梅[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2015年第2期195-199,共5页Radar Science and Technology

摘　　要：提出了一种冰雪对大型阵列雷达天线性能影响的评估方法。该方法利用等效的原理,将冰雪对阵列天线性能的影响归结于它对天线单元或天线罩空间匹配的影响,并建立了天线阵列冰雪覆盖状态的分析模型,可在天线设计之初就给出冰雪覆盖对天线阵列性能的影响预估,为雷达系统设计提供决策依据。这样,在雷达系统设计时可以省略或简化天线阵面的融冰雪设备,降低雷达的生产成本和使用成本。文中还给出了设计实例。An approach of evaluating the effects of ice and snow on the performance of large array is pro-posed in this paper.The influences of ice and snow covered on the large array is regarded equivalently as the change of space matching of the elements or the radome.A model is put forward to analyze the antenna array with ice and snow covered,so that the effects can be predicted at the beginning of antenna design,which can support rational decision when designing system parameters.As a result,the device for removing ice and snow on the large array antenna can be reduced or be omitted to reduce the production cost and the operation-al cost.A design example is given in this paper.

关 键 词：数字阵列 冰雪 有源驻波系数 增益 

分 类 号：TN821.8[电子电信—信息与通信工程]