摘要
针对窄带信号模型下的均匀线性阵列测向,从波数域角度提出基于频谱估计的测向方法,在数学上分别分析推导基于阵列各通道信号时域和频域特征进行谱估计测向的步骤,研究阵列间距与无模糊角度估计范围之间的关系,分析影响测向误差的因素。对一种阵列构型下的测向进行仿真分析,证明该方法的可行性和正确性。
For the direction finding of uniform linear array under narrowband signal model,a method based on wavenumber domain spectrum estimation is proposed,mathematically steps based on time and frequency characteristics of each channel in the array are analyzed and de-duced,the relation between the array pitch and the unambiguous direction estimation range is studied,and the factors affecting the direction finding error are studied.Based on the method,simulation for direction finding under a specific uniform array model is given.The results of sim-ulation prove the rightness of the method.
作者
成志强
CHENG Zhiqiang(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)
出处
《电子信息对抗技术》
北大核心
2021年第5期42-46,共5页
Electronic Information Warfare Technology
关键词
均匀线阵
波达方向
空间采样
频率估计
测向
窄带信号
uniform linear array
Direction Of Arrival(DOA)
spatial sampling
frequency esti-mation
direction-finding
narrowband signal
