摘要
低副瓣阵列天线是现代雷达的普遍要求,但低副瓣天线的方向图指标通常受随机误差影响较大,设计时若不充分考虑随机误差对这些指标的影响,将会对实际结果产生较大影响.针对上述问题,提出了一种适合于雷达阵列天线低副瓣波束的幅相随机误差分析方法,可确定低副瓣波束Taylor综合的合理副瓣值和满足副瓣指标要求的幅相误差,并分析了幅相误差对阵列方向系数及波束指向的影响.仿真结果表明:该方法可靠有效,可为天线阵面和馈电网络设计以及安装精度提供依据.
Low side lobe array antenna is a common requirement of modern radar,but the pattern of low side lobe antennas are usually influenced by random errors,if not fully consider the effect of random errors during design,random errors will bring great impact on the actual results.To solve the above-mentioned problem,a method suitable for the random error analysis of low side lobe beam formed by radar array antenna is presented in this paper,by which the reasonable side lobe level in the Taylor synthesis for low side lobe beam and the amplitude and phase errors can be determined.Moreover,the effects of the random errors on the array direction and beam direction of array are analyzed.Simulated results are given and found this method to be valid.
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第2期264-268,共5页
Chinese Journal of Radio Science
关键词
雷达阵列
低副瓣
随机误差
radar array
low side lobe
random errors
