基于单天线波束扫描的解析测角方法  

Analytical method of direction based on single antenna scanned-beam

作　　者：朱晓丹[1] 朱沛胜[2] 朱伟强[1] 陈卓[1] 曹雄宇 Zhu Xiaodan;Zhu Peisheng;Zhu Weiqiang;Chen Zhuo;Cao Xiongyu(No.8511 Research Institute of CASIC,Nanjing 210007,Jiangsu,China;Institute of Acoustics,Chinese Academy of Sciences,Beijing 100080,China)

机构地区：[1]中国航天科工集团8511研究所,江苏南京210007 [2]中国科学院声学研究所,北京100080

出　　处：《航天电子对抗》2018年第3期9-12,59,共5页Aerospace Electronic Warfare

摘　　要：针对单天线测角问题,提出一种基于波束扫描的解析测角方法。首先将天线方向图建模为指数和形式,将角度估计模型转化为包含角度信息的模式分量估计问题,从而实现单模角度估计;结合模式分量的估计误差,可推导得到多模联合估计,同时推导了理论估计精度和天线模式的求解方法。理论和仿真结果表明,此方法具有估计精度高、计算简单的优点,具有广泛的应用前景。Direction finding using single anten na is addressed.A scanned-beam based analytical method is proposed.Firstly,the problem can be transformed to the estimation of mode component when antenna pa ttern is expressed with a formula of exponential sums,thus DOA can be induced from each mode.Considering the estimation error,a multi-mode estimator with its theoretical error is derived.Both theoretical and simulation results demonstrate that the proposed method can obtain high precise estimation with low computation cost and possesses wide application prospect.

关 键 词：测角 旋转单天线 幅度 模式分量 

分 类 号：TN97[电子电信—信号与信息处理]