| 摘要: |
| 由于受实际环境的限制，天线阵的布设受到一定的约束，而实际测向环境限制了天线
阵列的阵列结构，阵列结构是否合理将直接影响测向的精度。针对特定环境对阵列结构的特
殊要求及二维测向的实际问题，建立了非规则几何结构阵列进行二维测向的数学模型，研究
了基于MUSIC算法的非规则几何结构阵列的二维测向问题，对非规则结构阵列的阵列结构对
测向模糊性的影响进行了分析，以矩形平面阵列和任意形平面阵列为例，对两种阵列的测向
性能进行了仿真比较，结果证明，提出的数学模型对非规则结构平面阵列的研究具有有
效性，可广泛应用于任意平面空间的二维测向。 |
| 关键词: 波达方向 非规则阵列 阵列结构 模糊性 经典MUSIC算法 |
| DOI： |
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| 基金项目: |
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| DOA estimation performance of irregular geometry plane antenna array |
| ZHANG Li-qiang,QUAN Hou-de,CUI Pei-zhang |
| () |
| Abstract: |
| The array′s geometry subjects to limitations because of the actual detec
ting environment′s restriction, which directly influences the precision of dire
ctionfinding. To address the issue of array geometry, some particular applicat
ion environment and the twodimensional Directionofarrival(DOA), a mathema
tical model is established for the irregular geometry plane antenna array to mea
sure the twodimensional DOA of multiple distributed sources in space. The irre
gular geometry plane array′s twodimensional DOA is studied which is based on
the classical MUSIC. The relationship between geometry of the antenna array and
DOA ambiguity is analysed in this paper. The array′s DOA performance, which is bas
ed on planar array and arbitrary geometry array, is compared by simulation. The v
alidity of this model and accuracy of theoretical analysis are confirmed by simu
lation results. It can find wide application in the field where irregular plane
space′s twodimensional DOA is required. |
| Key words: direction-of-arrival irregular geometry array array configuration ambiguity c
lassical MUSIC algorithm |
