摘要
分析了干涉仪的天线阵元极化差异导致测角误差的原理,指出该项误差是干涉仪在工程应用中最大的误差来源,提出使用基于数字处理的合成阵元代替常规阵元消除该误差的方法。合成阵元的权值表用离线方式生成,干涉仪工作时以测得的信号频率为依据在权值表中查找对应的权值实时进行阵元合成,消除阵元间的极化差异和测角误差。
DOA measurement error trom antenna potanzat^o- ~,~ main error source in application. A solution based on digital processing synthetic array element is proposed for eliminating the error. Weights table of synthetic array dements indexed by frequency is made offline and is used online when interferometer is on operation to clear polarization difference and DOA measurement errors among array elements.
出处
《电子信息对抗技术》
2013年第4期66-68,共3页
Electronic Information Warfare Technology
关键词
干涉仪
天线极化
测角误差
数字处理
interferometer
antenna polarization
DOA measurement error
digital processing
