Identifying unambiguous frequency pattern for target localisation using frequency diverse array
Identifying unambiguous frequency pattern for target localisation using frequency diverse array
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DOI：
10.1049/el.2017.2355
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发表时间：
2017-08
影响因子：
1.1
通讯作者：
Jingjing Li;Hongbin Li;S. Ouyang
中科院分区：
文献类型：
--
作者：
Jingjing Li;Hongbin Li;S. Ouyang
具有线性频率方向图(即每个天线单元的中心频率线性增加)的常规频率分集阵列(FDA)的波束方向图在距离和角度上进行耦合。具有随机频率模式的FDA只有在阵元数目足够大的情况下才能大概率地将距离和角度解耦。检验了作为线性FDA的随机排列的频率模式的模糊性。提出了一种基于特征向量的判据，用于识别利用这种阵列进行目标定位时可能出现的模糊。大量的实验结果验证了该模糊识别准则的有效性。
The beampattern of a conventional frequency diverse array (FDA) with linear frequency pattern (i.e. the centre frequency of each antenna element is linearly increasing) is coupled in range and angle. FDA with random frequency pattern can decouple the range and angle with high probability only when the number of elements is sufficiently large. The ambiguity of frequency patterns that are random permutations of a linear FDA is examined. An eigenvector-based criterion to identify possible ambiguity in target localisation using such arrays is proposed. Numerous results are presented to verify the effectiveness of the proposed ambiguity identification criterion.