| 基于道路辅助的机载SAR动目标检测和参数估计 |
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| 引用本文： | 史洪印.基于道路辅助的机载SAR动目标检测和参数估计[J].东北重型机械学院学报,2012(5):433-438. |
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| 作者姓名： | 史洪印 |
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| 作者单位： | 燕山大学信息科学与工程学院,河北秦皇岛066004 |
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| 基金项目： | 国家自然科学基金资助项目（61102110）; 河北省自然科学基金资助项目（F2010001285,F2012203180） |
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| 摘 要： | 经典的合成孔径雷达（SAR）动目标检测方法无法实现地面非匀速动目标的参数估计,为解决这一问题,本文根据动目标成像的特点,提出一种基于道路信息辅助的机载双通道SAR动目标检测方法。根据双通道SAR系统空间几何模型和回波信号模型,首先采用DPCA技术实现杂波抑制和动目标的检测,然后利用道路信息确定动目标的位置和速度,最后根据动目标方位向的散焦程度,估计动目标的距离向加速度。仿真结果验证了该方法的有效性。
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| 关 键 词： | 合成孔径雷达 地面动目标检测 参数估计 道路辅助 |
Moving target detection and parameter estimation of airborne SAR based on road assistance |
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| Authors: | SHI Hong-yin |
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| Affiliation: | SHI Hong-yin(College of Information Science and Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China) |
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| Abstract: | Traditional Synthetic Aperture Radar（SAR） moving target detection methods cannot estimate the parameters of nonconstant velocity moving targets.To solve the problem,amethod of airborne dual-channel SARmoving targets detection is presented based on road assistance and the characteristics of moving target imaging.From the spatial geometry model and echo signal of the dual-channel SAR system,Displaced Phase CenterAntenna（DPCA） technique is used firstly to suppress clutter and detectmoving targets,then the velocity and location parameters of moving targets are estimated by using road information.Finally,across-track acceleration can be computed based on azimuth defocusing of moving targets.Numerical simulations have demonstrated the effectiveness of the approach proposed. |
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| Keywords: | synthetic aperture radar ground moving target detection parameters estimation road assistance |
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