| 一种机载前视阵雷达近程杂波谱补偿方法 |
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| 引用本文： | 袁晓懿,廖桂生,李明.一种机载前视阵雷达近程杂波谱补偿方法[J].雷达科学与技术,2009,7(2):124-128. |
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| 作者姓名： | 袁晓懿 廖桂生 李明 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室,陕西西安,710071 |
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| 摘 要： | 机载前视阵雷达近程杂波谱在方位-多普勒域随距离变化剧烈,功率谱不重合并严重展宽,直接进行空时自适应处理（STAP）不能在待检测单元形成窄而深的凹口,致使地面动目标检测（GMTI）性能下降。文中提出一种导向矢量矩阵最小二乘拟合方法,该方法利用训练单元和近程待检测单元导向矢量拟合矩阵对杂波数据进行变换,使训练单元的杂波子空间逼近于待检测距离单元,从而实现了机载前视阵雷达近程杂波谱重合。仿真实验表明该方法能够对近程杂波非均匀性进行有效补偿,减轻杂波谱随距离变化对空时自适应处理性能的影响。
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| 关 键 词： | 机载雷达 前视阵 杂波抑制 最小二乘 谱补偿 |
A Method of Compensation for Clutter Spectrum on Short Ranges for Airborne Forward-Looking Radar |
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| YUAN Xiao-yi,LIAO Gui-sheng,LI Ming.A Method of Compensation for Clutter Spectrum on Short Ranges for Airborne Forward-Looking Radar[J].Radar Science and Technology,2009,7(2):124-128. |
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| Authors: | YUAN Xiao-yi LIAO Gui-sheng LI Ming |
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| Affiliation: | National Key Lab of Radar Signal Processing;Xidian University;Xi'an 710071;China |
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| Abstract: | In angular and Doppler domain,clutter spectrum from short ranges for airborne forward-look-ing radar varies sharply and widens with range bins,thus leading to wide and low clutter notch and undesirable performance of ground moving target indication(GMTI) in space-time adaptive processing(STAP).In this paper,we present a method of steering vector matrix fitting via the least square principle.The clutter subspace on the range bin to be detectioned can be approximated by transforming the training data via a se... |
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| Keywords: | airborne radar forward-looking radar clutter suppression least square spectrum compensation |
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