| 星载非均匀稀布阵高精度测向性能分析 |
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| 引用本文： | 吴世龙,罗景青.星载非均匀稀布阵高精度测向性能分析[J].宇航学报,2006,27(6):1378-1381. |
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| 作者姓名： | 吴世龙 罗景青 |
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| 作者单位： | 解放军电子工程学院,合肥230037 |
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| 基金项目： | 国家高新计划（863计划,2004AA775063） |
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| 摘 要： | 基于微小卫星的侦察与无源定位技术是目前各国广泛研究的问题之一。为了克服有效载荷的限制，寻求适于星载的接收阵列形式，文中针对两种非均匀间距L型稀布阵，采用二维MUSIC算法分析了阵列对地面辐射源的测向性能，并与等间距及同孔径的均匀L阵进行了比较，利用Matlab编程，给出了仿真结果。理论分析和仿真结果表明，本文考虑的非均匀间距阵稀布L阵能够实现对地面辐射源的高精度测向，测向性能明显优于同孔径（等间距）阵。
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| 关 键 词： | 卫星侦察 稀疏阵 非均匀阵 地面辐射源 高精度测向 |
| 文章编号： | 1000-1328（2006）06-1378-04 |
| 收稿时间： | 06 6 2005 12:00AM |
| 修稿时间： | 2005-06-062005-11-15 |
High-precision Direction Finding Performance of Space-Borne Non-uniform Spaced Arrays |
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| WU Shi-long, LUO Jing-qing.High-precision Direction Finding Performance of Space-Borne Non-uniform Spaced Arrays[J].Journal of Astronautics,2006,27(6):1378-1381. |
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| Authors: | WU Shi-long LUO Jing-qing |
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| Institution: | PLA Electronic Engineering Institute, Hefei 230037, China |
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| Abstract: | Reconnaissance and passive positioning with micro satellites is widely studied nowadays.On purpose to overcome the limitation of the efficient load and get the receive array fit for space-borne,direction finding(DF) performance on ground emitters of two kinds of non-uniformly spaced L-shaped sparse arrays is analyzed with the two dimensional MUSIC algorithm.Comparisons with uniformly spaced and equal aperture L-shaped arrays are provided.Theoretic analysis and simulation results prove that the non-uniformly spaced L-shaped sparse arrays considered hold the better performance in DF for ground emitters than equal aperture(space) one. |
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| Keywords: | Satellite recognition Sparse array Ground emitter signals Non-uniform spaced array High-precision direction finding |
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