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首页> 外文会议>International Geoscience and Remote Sensing Symposium >A Novel Ground Moving Target Radial Velocity Estimation Method for Dual-Beam Along-Track Interferometric Sar
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A Novel Ground Moving Target Radial Velocity Estimation Method for Dual-Beam Along-Track Interferometric Sar

机译：沿轨道干涉轨道双梁的新型地面移动目标径向速度估计方法

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摘要

Traditional dual-beam along-track interferometric synthetic aperture radar(DB-AT-InSAR) system uses along-track inter-ferometry(ATI) technique to calculate the radial velocity. However, the interferometric phase acquired by ATI can be easily affected by the noise and static clutter, which may reduce the accuracy of radial velocity estimation. In this paper, a novel ground moving target radial velocity estimation method is proposed for DB-AT-InSAR. First, the azimuth squint angle of the DB-AT-InSAR is reduced to make the fore and aft beams overlap. Then, only the overlapping subaperture echoes are used to reconstruct the SAR images by back projection algorithm. Finally, clutter suppression interferome-try(CSI) technique is applied to acquire high-accuracy radial velocity estimation. Since CSI technique can be able to suppress the clutter, it can obtain better interferometric phase than ATI, which improves the accuracy of radial velocity estimation. Simulation results show that the proposed method can obtain higher accuracy in radial velocity estimation than ATI method for DB-AT-InSAR system.
机译：传统的双光束沿着轨道干涉性合成孔径雷达（DB-AT-Ins-Insar）系统使用沿着轨道间（ATI）技术来计算径向速度。然而，由ATI获取的干涉测量阶段可以容易地受到噪声和静态杂波的影响，这可以降低径向速度估计的准确性。本文提出了一种新的地面移动目标径向速度估计方法，用于DB - insar。首先，减小DB-AT-Insar的方位角斜视角度以使前后光束重叠。然后，仅使用重叠的子地图回波以通过后投影算法重建SAR图像。最后，应用杂波抑制干涉（CSI）技术来获取高精度的径向速度估计。由于CSI技术能够抑制杂波，因此它可以获得比ATI更好的干涉相位，这提高了径向速度估计的精度。仿真结果表明，该方法可以在径向速度估计中获得比ATI方法的径向速度估计更高的准确性。

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