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一种基于分数阶Fourier变换的改进星载SAR动目标检测方法

Improved Method Based on FrFT for Spaceborne SAR Moving-Target Detection
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摘要 方位向回波Doppler参数估计是星载SAR地面运动目标检测的关键。文章对合成孔径时间内动目标与卫星相对运动引起的Doppler参数变化进行了分析,然后针对分数阶Fourier变换在Doppler参数估计上的应用进行了改进,最后通过仿真验证此方法的有效性。 Doppler parameter estimation of azimuth echoes is the key for spaceborne SAR moving-target detection. First, this paper analyses the shift of Doppler parameters caused by relative movement between moving targets and satellite within a synthetic aperture; secondly, we improved the method of FrFT for Doppler parameter estimation ; finally, simulation results proved the validity of our method.
作者 彭书娟 马德宝
机构地区 信息工程大学信息工程学院
出处 《信息工程大学学报》 2008年第4期431-434,共4页 Journal of Information Engineering University
基金 军队科研基金资助项目
关键词 SAR 分数阶FOURIER变换 动目标检测 Doppler参数估计 SAR FrFT moving-target detection Doppler parameter estimation
分类号 TN951 [电子电信—信号与信息处理]
  • 相关文献

参考文献6

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共引文献175

信息工程大学学报
2008年 第4期

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