| 多级嵌套维纳滤波自适应降维STAP抗干扰方法研究 |
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| 引用本文： | 龚文飞,孙昕,吴嗣亮.多级嵌套维纳滤波自适应降维STAP抗干扰方法研究[J].宇航学报,2010,31(10):2360-2366. |
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| 作者姓名： | 龚文飞 孙昕 吴嗣亮 |
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| 作者单位： | 1. 北京交通大学 电子信息工程学院，北京 100044; 2. 北京理工大学 信息与电子学院，北京 100081 |
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| 基金项目： | 收稿日期：20100120;修回日期：20100920 |
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| 摘 要： | 在分析多级嵌套维纳滤波（MSNWF）给出的干扰子空间和噪声子空间信息的基础上，提出了多级嵌套维纳滤波自适应降维空时自适应处理（STAP）抗干扰算法。该方法分析了MSNWF前向迭代过程中相邻级期望信号的协方差随迭代次数变化关系，结合干扰子空间和噪声子空间信息自适应地确定迭代次数，在不增加额外计算量的条件下实现了降维维数的自适应选择。仿真结果分析表明，该方法在保证抗干扰性能不受影响的前提下，进一步减小了STAP算法的计算量，提高了算法的实时性。
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| 关 键 词： | 多级嵌套维纳滤波 降维 空时自适应处理 抗干扰 干扰子空间 噪声子空间 |
| 收稿时间： | 2010-01-20 |
Research on Adaptive Reduced-Dimension STAP Anti-Interference Based on Multistage Nested Wiener Filter |
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| GONG Wen-fei,SUN Xin,WU Si-liang.Research on Adaptive Reduced-Dimension STAP Anti-Interference Based on Multistage Nested Wiener Filter[J].Journal of Astronautics,2010,31(10):2360-2366. |
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| Authors: | GONG Wen-fei SUN Xin WU Si-liang |
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| Institution: | GONG Wen-fei1,SUN Xin1,WU Si-liang2 ( 1. School of Electronics and Information Engineering Beijing Jiaotong University,Beijing 100044,China,2. School of Information and Electronics Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | An adaptive reduced-dimension space-time adaptive process ( STAP) anti-interference method is proposed on the basis of analysis of the information of interference subspace and noise subspace provided by MSNWF. This method is used to analyze the varying trend of the cross-correlations between the adjacent desired signals in the forward interaction of MSNWF. Then optimal iterations are obtained by taking the information of interference subspace and noise subspace into account meanwhile. Thus optimal dimension... |
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| Keywords: | Multistage nested Wiener filter ( MSNWF) Reduced-dimension Space-time adaptive process Anti-interference Interference subspace Noise subspace |
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