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| 改进的机载非正侧视阵STAP样本选择策略 | |
| 引用本文： | 刘 涛,马红光,张 永,刘振华.改进的机载非正侧视阵STAP样本选择策略[J].现代雷达,2012,34(3):35-37. |
| 作者姓名： | 刘 涛 马红光 张 永 刘振华 |
| 作者单位： | 1. 第二炮兵工程学院101教研室,西安,710025 2. 第二炮兵驻南京地区专装代表室,南京,210013 3. 南京电子技术研究所,南京,210039 |
| 摘 要： | 机载非正侧视阵的杂波是距离依赖的,使用对称或分段样本选择策略估计的协方差矩阵误差较大,为此提出了一种分段非对称的样本选择策略。针对非正侧视阵距离模糊杂波的分布特性,把数据按距离依赖的程度分段,在距离依赖严重的分段内进行非对称样本选择,在距离依赖较弱的分段,仅计算一次权值。该样本选择策略的在性能和计算量两方面都有所改善。仿真结果证明了该方法的有效性。 |
| 关 键 词： | 非正侧视阵 空时自适应处理 样本选择策略 距离模糊 |
Improved Secondary Data Selection Method for Airborne Non-side-looking Arrays STAP |
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| LIU Tao,MA Hong-guang,ZHANG Yong and LIU Zhen-hua.Improved Secondary Data Selection Method for Airborne Non-side-looking Arrays STAP[J].Modern Radar,2012,34(3):35-37. | |
| Authors: | LIU Tao MA Hong-guang ZHANG Yong and LIU Zhen-hua |
| Affiliation: | 1.101 Section,The Second Artillery Engineering College,Xi’an 710025,China) (2.The Delegate Office of the Second Artillery in Nanjing,Nanjing 210013,China) (3.Nanjing Research Institute of Electronics Technology,Nanjing 210039,China) |
| Abstract: | The ground clutter of the non-side-looking arrays is seriously range dependent,thus the covariance estimated from symmetric or segmented selected samples is seriously skewed.A segmental asymmetric secondary data selection method is presented. The clutter distribution of the non-side-looking array is analyzed in detail.The data from all range gates are assigned to different segments according to the range dependent extent.In the segment that clutter is strongly range dependent,the asymmetric secondary data selection method is used,otherwise a single weight is calculated.The method proposed is improved at both performance and computation cost.Computer simulation results prove the validity of the method. |
| Keywords: | non-side-looking array space-time adaptive processing secondary data selection method range ambiguity |
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