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首页> 外文会议>IEEE International Conference on Signal, Information and Data Processing >Research on Sub-aperture Imaging Algorithm of Near-Field Wide Beam Synthetic Aperture Radar
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Research on Sub-aperture Imaging Algorithm of Near-Field Wide Beam Synthetic Aperture Radar

机译：近场宽波束合成孔径雷达的子孔径成像算法研究

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The data in the near-field region around radar is taken by a wide beam, and the imaging algorithm for targets in the coverage of beam is studied. The difficulty of near-field imaging is that the assumption of plane wave is no longer established, wavefront can only be processed as spherical wave. There is no particularity in the near-field imaging scene. The back projection algorithm is universally applicable to any scene. Cartesian coordinate imaging grid will significantly limit the imaging range. Modified back projection algorithm with polar coordinate image grid makes full use of recorded data and expand the imaging range. The simulation results show that the modified algorithm is feasible and effective, the image of scene can be reconstructed with high range resolution and cross range resolution.
机译：利用宽波束获取雷达周围近场区域的数据，研究波束覆盖范围内目标的成像算法。近场成像的困难在于不再建立平面波的假设，只能将波前处理为球面波。在近场成像场景中没有特殊性。反投影算法普遍适用于任何场景。笛卡尔坐标成像网格将大大限制成像范围。具有极坐标图像网格的改进的反投影算法可以充分利用记录的数据并扩大成像范围。仿真结果表明，改进算法是可行和有效的，能够以高距离分辨率和跨距离分辨率重建场景图像。

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