摘要
本文首先介绍了波束空间的测向方法,然后详细说明了基于波束空间的三波束测向、合成差波束测向和空间谱估计测向三种算法的原理。在此三种测向算法基础上,仿真了基于理想全向天线方向图的16天线单元组成的均匀阵列和利用微波暗室采集的有向天线方向图16天线单元组成的均匀阵列,在输入信号具有不同入射方向、不同信噪比条件下,三种测向算法的测向误差精度。结合工程应用对上述两种天线方向图的仿真结果进行了分析,给出了各种测向算法适用的工程实现条件。
This paper introduces the direction-detecting method of beam space at first,and then explains the principle of three-beams-direction-detecting algorithm,direction-detecting algorithm from synthesis difference beam,and direction-detecting algorithm from spatial spectrum estimation,based on beam space.On the basis of these three direction-detecting algorithms,the uniform array composed of 16 antenna elements based on ideal omnidirectional antenna pattern and the uniform array composed of 16 antenna elements collected by microwave anechoic chamber are simulated.Under the condition of different incident direction and different signal-to-noise ratio of the input signal,the direction-detecting error accuracy of the three algorithms is obtained.Combing with the engineering application,the simulation results of the above two kinds of antenna pattern are analyzed,and the applicable engineering implementation conditions of various direction-detecting algorithms are given.
作者
石林艳
王宏
王书楠
SHI Lin-yan;WANG Hong;WANG Shu-nan(The 51st Research Institute of CETC,Shanghai 201802,China)
出处
《中国电子科学研究院学报》
北大核心
2020年第3期248-254,共7页
Journal of China Academy of Electronics and Information Technology
关键词
空间谱估计
合成差波束
天线方向图
spatial spectrum estimation
synthesis difference beam
antenna pattern
