摘要
针对一种基于平面阵列天线的二维来波到达角估计算法进行研究,首先建立了矩形平面阵列天线的信号模型,并以此信号模型为基础推导了基于波束形成器技术的二维来波到达角估计公式,利用本文推导的功率谱估计公式与二维离散傅里叶变换公式这两者在表达式形式上的相似性,提出了使用二维快速傅里叶变换(FFT)完成矩阵相乘运算的方法,大大降低了信号处理过程中的计算量,最后的试验仿真结果表明:该算法具有较好的角度估计精度。
A two dimensional( 2-D) direction of arrival( DOA) estimation algorithms based on planar array antenna is studied. Firstly,a signal model of rectangular planar array antenna is established. Based on this signal model,a 2-D DOA estiomation formula based on beam-former technology is derived. By using the similarity between the power spectrum estimation formula derived in this paper and the 2-D DFT formula in expression form,a method of matrix multiplication using 2-D FFT is presented. Thus,the amout of calculation in signal processing is greatly reduced. Finally,the simulation results show that the algorithm in this paper has good angle estimation accuracy.
作者
吴剑锋
裴虎城
余勇军
田锦昌
王友成
Wu Jianfeng;Pei Hucheng;Yu Yongjun;Tian Jinchang;Wang Youcheng(Beijing Electro-mechanical Engineering Institute,Beijing 100074,China;Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory,Beijing 100074,China)
出处
《战术导弹技术》
北大核心
2020年第5期15-19,共5页
Tactical Missile Technology
基金
国家自然科学青年基金(61701465)
国家自然科学面上基金(61971099)。
