T/R组件故障对DBF影响分析及维护策略研究

Influence of T/R Component Fault on DBF and Maintenance Strategy

针对相控阵雷达T/R组件故障数低于总数10%时的可维护性和维护时机问题,分析通道故障对数字波束形成的影响规律,提出保持雷达性能不降级的维护策略。首先,基于面阵结构分别建立发射数字波束形成(DBF)数学模型和基于最小均方(LMS)算法的接收数字波束形成数学模型。其次,仿真验证T/R组件处于正常和部分失效2种状态时的波束形成性能,采用5个指标对比分析故障数量和故障区域对接收DBF性能和雷达探测性能的影响。最后,分析其内在规律,提出维护策略,为科学精细维修与作战效能发挥提供理论依据和决策支持。

In view of maintainability and maintenance timing for T/R components of phased array radar in which the fault number is less than 10%,a rule of channel fault forming the influence on DBF is analyzed,and a maintenance strategy to keep radar performance from degradation is proposed.First,mathematical models of transmitting DBF and receiving DBF based on LMS algorithm are established based on the structure of planar array.And then,the transmitting and receiving beam forming performance of T/R components are verified in both normal condition and partial failure through the simulation,and the influence of fault number and fault region on receiving DBF performance and radar detection performance is analyzed by using five indicators.Finally,its internal law is analyzed,and the maintenance strategy is putted forward,providing theoretical basis and decision support for scientific and precise maintenance and operational effectiveness.