大型相控阵雷达的天线阵面系统复杂,故障模式多样,各模式对雷达工作的影响程度也不同。针对这些特点,文中采用了基于任务可靠性的可靠性预计。同时,通过表决冗余及开展定期检修的方式,来确保天线阵面设备及系统的高任务可靠性。推导了各种典型任务剖面的可靠性数学模型,建立了任务可靠性模型,并对雷达天线阵面进行了可靠性预计,从而为大型相控阵雷达天线阵面的高任务可靠性设计提供了理论依据和技术方法。

As a complex system, the antenna array of a large phased radar has multiform fault patterns which differently influence the radar reliability. The mission reliability evaluation with the vote redundancy and time based maintenance to achieve the high mission reliability are discussed. The mission reliability model is presented based on those of typical mission profiles which are derived. The efficiency of the present method is validated thoroughly by the numerical results and can be used as the theoretical method to achieve the high mission reliability of the large phased arrays.

TN82