基于单元位置误差的有源相控阵天线辐射和散射性能综合分析  

Integrated analysis of radiation and scattering performances of active phased array antennas with element position errors

作　　者：王从思[1,2] 王伟锋[1] 王伟[1] 康明魁[1] 段宝岩[1] 刘鑫[1] 韩如冰[1] 

机构地区：[1]西安电子科技大学电子装备结构设计教育部重点实验室,陕西西安710071 [2]美国加州大学伯克利分校机械工程系,伯克利ca94720

出　　处：《系统工程与电子技术》2014年第10期1893-1898,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(51035006;51205301;51475349);国家重点基础研究发展计划(973计划)(2015CB857102)项目;新世纪优秀人才支持计划(NCET-09-0633);高等学校学科创新引智计划(B14042);高等学校博士学科点专项科研基金(20120203110012);中央高校基本科研业务费专项资金(SPSZ011401;72103389)资助课题

摘　　要：针对有源相控阵天线雷达散射截面积(radar cross section,RCS)计算复杂,及天线单元位置误差对其RCS的影响难以估计的问题,基于天线单元的相位误差分析,建立了有源相控阵天线的结构与散射阵因子耦合模型,极大简化了有源相控阵天线RCS计算的复杂度,并在此基础上研究了天线单元位置误差对增益及RCS的综合影响。结果表明,合理降低天线单元的位置精度可以抑制有源相控阵天线的RCS。工程人员可基于此权衡辐射和散射性能,适当放宽有源相控阵天线加工及安装公差,在保证天线综合性能前提下有效减轻加工难度,降低加工成本。To reduce the computational complexity of antenna radar cross section （RCS）, and estimate the effects of element position errors on antenna RCS, a novel structural and scattering array factor （SAF） coupling model of active phased array antennas is developed. This model is derived by the element phase errors, which can greatly simplify the computational complexity of the array antenna RCS issues. And the integrated influence of the antenna element position errors on antenna gain and RCS is analyzed. The simulation results verify that an obvious RCS reduction of active phased array antennas could be implemented by reasonable enlargement of position tolerance of the array elements. On account of the coupling model, the radiation and scattering performances of active phased array antennas could be balanced by engineering to relax array antenna processing and install tolerances. With the premise of synthetic antenna performance ensurance, the difficulty of processing and development cost could be reduced.

关 键 词：有源相控阵天线 雷达散射截面积 结构变形 位置误差 散射阵因子 

分 类 号：TN821.8[电子电信—信息与通信工程]