摘要
天线的超低副瓣特性是影响机载相控阵雷达下视能力的一个重要指标。在传统的机载相控阵雷达天线的可靠性设计中是采用对n中取k的表决模型,该方法没有考虑失效T/R组件在天线阵列中所处的物理位置对于天线副瓣性能的影响。通过仿真分析,提出了一种计算有源相控阵雷达天线阵可靠性的新模型,该模型统筹考虑了失效组件的物理位置因素的影响并归纳出新的计算公式,并在此基础上举例说明。该可靠性新模型可用来指导机载相控阵天线的可靠性预计、分配和设计。
An important index to influence the down-looking capability of airborne phased array radar is the ultralow sidelobe level of antenna. The traditional design and analysis method of reliability of airborne phased array antenna is to reduce voting model redundancy by taking n from k. The influence of failure T/R module physical position on the ultralow sidelobe level of antenna is not considered in traditional design method. Considering the influence of failure T/R module physical position, this paper takes on a new model of computing antenna array reliability, and then an example is given to clarify this reliability model. The model can be used to guide the design of airborne phased array antenna and to judge the fault of radar system.
出处
《雷达科学与技术》
2009年第4期250-252,266,共4页
Radar Science and Technology
关键词
机载有源相控阵雷达
天线阵
超低副瓣
可靠性模型
airborne phased array radar
antenna array
ultralow sidelobe
reliability model
