阵元失效的共形相控阵天线性能评估研究  

Research on Performance Evaluation of Conformal Phased ArrayAntenna with Array Element Failure

作　　者：王涛[1] 陈学军[1] 李泽西 刘军锋 王戈 邓德鑫 辛鑫 WANG Tao;CHEN Xuejun;LI Zexi;LIU Junfeng;WANG Ge;DENG Dexin;XIN Xin(Xi'an Satellite Control Center,Xi'an 710043,China;Military Representative Bureau of Army Equipment Department in Xi'an,Xi'an 710032,China)

机构地区：[1]西安卫星测控中心,陕西西安710043 [2]陆军装备部驻西安地区军事代表局,陕西西安710032

出　　处：《无线电工程》2023年第10期2451-2460,共10页Radio Engineering

基　　金：国家自然科学基金(61601495)。

摘　　要：基于共形相控阵天线的测控系统能够实现全空域多目标同时测控,但也存在天线结构复杂和阵元数目庞大等特点。针对系统工作过程中阵元失效后无法准确评估波束合成性能的问题,开展了共形相控阵天线阵元失效对波束合成性能的影响分析,为系统任务规划和天线失效维修提供数据支撑。基于数字波束形成技术建立共形相控阵天线波束合成仿真模型,并基于Matlab软件实现。选取天线增益、归一化旁瓣和归一化栅瓣等表征天线波束合成性能的关键指标,分析集中损坏和均匀损坏2种情况下不同数量阵元失效对天线波束合成性能的影响。通过天线失效外场测试试验,验证了基于仿真分析的系统天线失效理论评估结果的准确性和有效性,理论分析结果能够为基于共形相控阵天线的测控系统任务规划和运维提供理论指导。TT&C system based on conformal phased array can realize simultaneous measurement and control of multiple targets in full airspace,however,there are also the characteristics such as complex antenna structure and large number of array elements.For the problem that the beam forming performance cannot be accurately evaluated after the antenna elements fail during the system operation,the analysis of the effect of antenna damage on the beam synthesis performance of conformal phased array antenna is carried out,so as to provide data support for system mission planning and antenna damage maintenance.Firstly,system beam forming simulation model for conformal phased array is established based on digital beam forming technology,and it was realized by Matlab software.Secondly,antenna gain,normalized side lobe and normalized grating lobe are selected as key indicators to characterize the performance of the formed beam,and the influence of different number of array element failures on the performance of antenna beam forming are researched in detail in both two cases of concentrated damage and uniform damage.Finally,the accuracy and validity of the antenna damage theoretical evaluation results based on simulation analysis are verified through external field test of the system.Experiment results indicate that the theoretical analysis results can provide theoretical guidance for mission planning and antenna maintenance of TT&C system based on conformal phased array.

关 键 词：共形相控阵 数字多波束形成 测控系统 多目标测控 阵元失效 性能评估 

分 类 号：TN820[电子电信—信息与通信工程]