摘要
针对宽带接收机对窄带信号进行频率和二维到达角(DOA)估计问题,本文提出了一种新的快速频率和角度估计方法,该方法首先利用参考频率进行DOA预估计,然后利用空域滤波有效地将频率和预估计DOA进行匹配,并根据天线阵列的结构特点利用信号的相应频率进行预估计DOA校准,获得了信号的准确频率和DOA估计值.最后的仿真分析验证了所提出方法的正确性和有效性.
For the problem of the frequency and 2D direction of arrive （DOA） united estimation of narrow band signal for wide band receiver, a novel quick method is proposed.First,the pre-estimation is used to get the pre-estimating DOA with reference frequency,then the space filtering method is used to make the match of the signal pre-esfimating DOA with its frequency,and the corresponding frequency is used to adjust the pre-estimating DOA according to the characteristic of the antenna configuration, therefore, the precise signal frequency and its DOA are obtained at the same time. The last simulation indicates that the proposed method is correct and effective to estimate the frequency and DOA of narrow signal for wide band receiver.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2009年第3期523-528,共6页
Acta Electronica Sinica
基金
国家杰出青年基金(No.60825104)
国家自然科学基金(No.60736009)
关键词
阵列信号处理
二维DOA估计
频率估计
宽带接收机
空域滤波
array signal processing
two dimension direction of arrive estimation
frequency esfimhtion
wide-band receiver
space filtering
