基于混合基线的任意平面阵列干涉仪测向方法

潘玉剑; 宋慧娜

doi:10.11999/JEIT210406

基于混合基线的任意平面阵列干涉仪测向方法

doi: 10.11999/JEIT210406

潘玉剑^1, ,,
宋慧娜²

1.
杭州电子科技大学电子信息学院杭州 310018
2.
杭州电子科技大学通信工程学院杭州 310018

基金项目: 国家自然科学基金(61701145)

详细信息

作者简介:
潘玉剑：男，1987年生，副教授，研究方向为阵列信号处理、雷达信号处理

宋慧娜：女，1987年生，讲师，研究方向为SAR数据处理

通讯作者:
潘玉剑　pyj@hdu.edu.cn

中图分类号: TN911.7; TN953
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- 文章访问数: 614
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- 被引次数: 0
出版历程
- 收稿日期: 2021-05-12
- 修回日期: 2021-10-25
- 录用日期: 2021-11-05
- 网络出版日期: 2021-11-15
- 刊出日期: 2021-12-21

Direction Finding Method with Arbitrary Planar Array Based on Mixed Baselines

Yujian PAN^{1
, ,},
Huina SONG²

1.
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
2.
School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China

Funds: The National Natural Science Foundation of China (61701145)

摘要

摘要: 为了适应各种阵列构型，该文提出基于混合基线的任意平面阵列干涉仪测向方法。首先，基于无相位模糊的数学模型分析，推导了混合基线任意平面阵干涉仪测向方法。然后，针对相位模糊问题，提出了基于归一化改进方向函数的聚类方法，并给出了基线对的选取方法。最后，通过数值仿真在随机任意阵、均匀圆阵和半圆阵上验证了所提方法的有效性。该方法对所选基线对中两个基线的长度和斜率没有约束。仿真结果显示，借助灵活的基线对选择以及归一化改进方向函数的引入，混合基线算法的解模糊性能优于等长基线算法和立体基线算法。
- 测向方法 /
- 任意阵列 /
- 干涉仪 /
- 相位解模糊 /
- 聚类分析
Abstract: In order to adapt to various array layouts, a direction-finding method with arbitrary planar array interferometer based on mixed baselines is proposed. Firstly, based on the analysis of the mathematical model without phase ambiguity, the direction-finding method via the mixed baselines with arbitrary planar array interferometer is derived. Secondly, for the problem of phase ambiguity, a clustering method based on the improved direction function with normalization is proposed, and the selection method of the baseline pairs is given. Finally, numerical simulations are performed to verify the effectiveness of the proposed method on random arbitrary array, uniform circular array and semicircular array. This method does not restrict the lengths and the slopes of the two baselines in the selected baseline pair. The simulation results show that with the help of flexible selection of baseline pairs and the introduction of the improved direction function with normalization, the ambiguity resolution performance of the mixed baselines algorithm is better than the equal-length baselines algorithm and the stereo baselines algorithm.
- Direction finding method /
- Arbitrary array /
- Interferometer /
- Phase ambiguity resolution /
- Clustering analysis

HTML全文

图 1 任意阵几何示意图

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图 2 随机任意阵测向性能

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图 3 8元阵基线对(41,52)不同信噪比相位解模糊性能比较

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图 4 8元阵基线对(31,42)不同信噪比相位解模糊性能比较

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图 5 5元半圆阵示意图

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图 6 5元半圆阵基线对(53,54)不同俯仰角相位解模糊性能比较

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图 7 5元半圆阵基线对(53,54)不同波长相位解模糊性能比较

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表 1 相同孔径不同阵型相位解模糊性能比较(%)

阵型 SNR(dB)
–15 –10 –5

5元均匀圆阵 91.4 100 100
7元均匀圆阵 95.0 100 100
8元均匀圆阵 96.4 100 100

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