摘要
为提高相控阵雷达和差波束法测角精度,研究了相控阵天线和差测角误差曲线的计算方法,分析了影响测角精度的不同因素。针对相控阵雷达测角误差函数随天线扫描角度变化问题,提出了任意扫描角度下相控阵天线相位中心的工程计算方法,可实时计算不同扫描角度的测角误差函数。仿真得到的测角误差曲线斜率与暗室测试得到的结果能够很好吻合,证明了算法的有效性。
To improve the angular accuracy for phased array radar, calculation method of sum and differential angular error curve for phased array antenna is studied and the different factors to influence the angle precision are analysed. Aiming at the condition that the angular error function changes with the scanning of phased array antenna, an engineering calculation method is propsed of phase center for array antenna under arbitrary scanning angle, which can calculate angular error function in real time. Simulation results of error curve slope for angle measurement fit with the results tested in anechoic chamber, which indicates the validity of the proposed method.
出处
《现代雷达》
CSCD
北大核心
2013年第7期13-15,共3页
Modern Radar
关键词
角误差曲线
天线相位中心
相控阵雷达
angel error curve
antenna phase center
phased array radar
