...
首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Ground Moving Target Refocusing in SAR Imagery Based on RFRT-FrFT
【24h】

Ground Moving Target Refocusing in SAR Imagery Based on RFRT-FrFT

机译:基于RFRT-FrFT的SAR图像地面动目标重聚焦。

获取原文
获取原文并翻译 | 示例
           

摘要

In this paper, a new algorithm is presented to image ground moving targets in a synthetic aperture radar (SAR) system based on range frequency reversal transform-fractional Fourier transform (RFRT-FrFT). In this algorithm, a range compressed signal is initially transformed into the range frequency domain and then RFRT is proposed to directly compensate the range migration via multiplying the signal in the range frequency domain by its reversed data according to the equal interval sampling of range frequency variable, which can significantly decrease the computational complexity in target envelope migration elimination. Then, FrFT is applied to accomplish the target motion parameter estimation after range migration alignment. Finally, a ground moving target is well focused after motion compensation. The effectiveness of the proposed algorithm is validated by both simulated and real SAR data.
机译:本文提出了一种基于距离频率反转变换-分数阶傅里叶变换(RFRT-FrFT)的合成孔径雷达(SAR)系统中地面目标成像的新算法。在该算法中,首先将距离压缩信号转换到距离频域,然后根据距离频率变量的等间隔采样,建议使用RFRT通过将距离频域中的信号乘以其反向数据来直接补偿距离偏移。 ,这可以大大降低消除目标包络迁移的计算复杂性。然后,在距离偏移对齐之后,应用FrFT来完成目标运动参数估计。最后,运动补偿后,地面移动目标可以很好地聚焦。仿真和实测SAR数据均验证了所提算法的有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号