| 引用本文: | 冯德军,王雪松,徐振海,等.基于ESPRIT的中段弹道目标特征提取方法.[J].国防科技大学学报,2004,26(2):41-45.[点击复制] |
| FENG Dejun,WANG Xuesong,XU Zhenhai,et al.A Study of the Midcourse Ballistic Target Signatures Extracting Based on ESPRIT[J].Journal of National University of Defense Technology,2004,26(2):41-45[点击复制] |
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| 基于ESPRIT的中段弹道目标特征提取方法 |
| 冯德军, 王雪松, 徐振海, 肖顺平, 王国玉 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 提出了一种新的弹道目标特征提取方法：对宽带雷达回波进行STRETCH处理后用ESPRIT方法估计其中频点，然后采用Gerschgorin 半径方法进行散射源数目估计，去除虚假频率，获得目标散射点的数目、位置、散射中心强度等特征参数。与基于FFT算法的特征提取方法相比，这种方法具有更强的抑制杂波能力和更高的分辨率。仿真结果表明了该方法的有效性。 |
| 关键词: 特征提取 高分辨雷达 一维距离像 旋转不变技术 |
| DOI： |
| 投稿日期：2003-10-20 |
| 基金项目:全国优秀博士论文专项资金项目(08100101)；湖南省自然科学基金资助项目(02JJY2100) |
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| A Study of the Midcourse Ballistic Target Signatures Extracting Based on ESPRIT |
| FENG Dejun, WANG Xuesong, XU Zhenhai, XIAO Shunping, WANG Guoyu |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A novel approach of extracting the high resolution signaturesof the ballistictarget in midcourse is proposed. This methodprocesseshigh-resolution radar echo by using STRETCHand extracts the signature of thetargetby using ESPRIT,includingthe positionand intensityof scattering centers.Then, the methodof Gerschgorinradii is used to estimate the number of scatteringcenters forremoving theillusive frequency dot. Compared with the FFTalgorithm, thisapproachpossesses higher resolution powe and can suppressthe clutter moreeffectively. Simulation results verify theeffectiveness of the method. |
| Keywords: signature extracting high-resolution radar range profile ESPRIT |
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