电子战有源相控阵适度降级分析  

Analysis on Graceful Degradation of Active Phased Array for Electronic Warfare

作　　者：杨立 刘智远 许放 YANG Li;LIU Zhiyuan;XU Fang(The 29th Research Institute of CETC,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《舰船电子对抗》2024年第4期87-93,104,共8页Shipboard Electronic Countermeasure

摘　　要：电子战有源相控阵通常由数十至数百阵元构成,这意味着需要同样数量的有源通道来支撑有源相控阵的正常工作,因此故障阵元必然会影响有源相控阵性能。通过合理可靠性设计可以使相控阵在存在故障阵元的情况下依然保证高效工作,即适度降级。首先,讨论了有源相控阵可靠性建模方法;随后,基于阵列理论分析了不同故障率及故障分布下相控阵性能降级情况;最后,讨论了阵元故障与干扰作用距离及侦察作用距离的定量关系。通过上述分析,一方面,可以依据适度降级标准快速评估可靠性要求,使有源相控阵在系统允许的适度降级条件下仍能正常工作且最终寿命不受影响;另一方面,在实际使用中可通过阵列自检信息,快速评估效能降级情况,具有较好的现实意义。The active phased array of electronic warfare usually consists of tens to hundreds of array elements,which means that active channels with the same number are needed to support the normal operation of active phased arrays.Therefore,the fault array elements will inevitably affect the performance of active phased arrays.Through reasonable reliability design,the active phased array can still ensure the efficient operation in the presence of faulty array elements,that is to say,the functions are graceful degradation.This paper firstly discusses the reliability modeling method of the active phased arry,then analyzes the performance degradation of the active phased array under different failure rates and fault distributions based on the array theory,and finally discusses the quantitative relationship between the array fault and the interference range as well as the detection range.Through the above analysis,on the one hand,the reliability requirements can be rapidly evaluated according to graceful degradation standards,so that the active phased array can still operate normally under graceful degradation conditions allowed by system,and the final life will not be affected;on the other hand,in practical use,the self-test information of array can be used to quickly evaluate the performance degradation situation,which has good practical significance.

关 键 词：适度降级 故障率 阵列平均无故障时间(MTBF) 故障阵列方向图 最小干扰作用距离 探测距离 

分 类 号：TN821.8[电子电信—信息与通信工程]