文章检索

  • 检索
  • 检索词:
  • 高级检索
您是今天第 1672位访问者
您是第 5368708 位访问者
阵元失效对相控阵天线绝对时延影响分析
Analysis of elements failure effects on absolute time delay of phased array antenna
投稿时间:2018-12-05  修订日期:2019-01-13
中文关键词:相控阵天线  绝对时延  失效  影响
英文关键词:phased array antenna  absolute time delay  failure  effects
基金项目:
作者单位
陈腾博 Beijing Institute of Spacecraft System EngineeringBeijing 100094China 
杜海龙 Beijing Institute of Spacecraft System EngineeringBeijing 100094China 
江 涛 Beijing Institute of Spacecraft System EngineeringBeijing 100094China 
摘要点击次数: 490
全文下载次数: 255
中文摘要:
      相控阵天线的阵元失效会造成绝对时延等性能参数的恶化。利用相控阵天线阵列综合和群时延特性的原理,分析了天线阵元随机分布失效和子阵失效情况下,天线绝对时延随之变化的趋势。通过算例仿真可知,在阵元随机失效数学模型下,天线绝对时延受失效阵元分布形式和失效阵元数量因素影响较大,20%的阵元失效情况下时延偏差最大达到0.39 ns;在子阵失效数学模型下,靠近阵面中心位置,子阵失效会导致绝对时延出现较大偏差。分析结果及结论可用于实际相控阵天线绝对时延的修正。
英文摘要:
      The failure of phased array antenna elements, can worsen the antenna performance such as absolute time delay. By use of the synthesis of array antennas and group delay theory,the variety of absolute time delay is analyzed, versus random distribution of elements failure and sub-array failure. By the random distribution numerical model, simulation results show that absolute time delay is affected by distribution and quantity of failure elements, and the deviation of time delay approaches to 0.39 ns on 20% elements failure. By the sub-array numerical model, the larger deviation of time delay will be caused by sub-array failure near the center of antenna array. The analysis results and the conclusion can be utilized to correct absolute time delay of phased array antenna.
引用本文:陈腾博,杜海龙,江 涛.阵元失效对相控阵天线绝对时延影响分析[J].太赫兹科学与电子信息学报,2019,17(3):440~444
DOI:10.11805/TKYDA201903.0440
学科分类代码:
查看全文  查看/发表评论  下载PDF阅读器

分享按钮