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首页> 外文会议>IEEE Radar Conference >Ship Detection, Discrimination, and Motion Estimation via Spaceborne Polarimetric SAR-GMTI
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Ship Detection, Discrimination, and Motion Estimation via Spaceborne Polarimetric SAR-GMTI

机译：通过星载极化SAR-GMTI进行船舶检测，辨别和运动估计

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A new approach to ship detection, discrimination, and motion estimation is proposed and demonstrated using a combined polarimetry and GMTI technique from a spaceborne platform. Using a standard dual-pol SAR, the new method exploits a bright “shadow” in cross-pol imagery of a moving ship and its azimuth-shifted image to discriminate it from other stationary or quasi-stationary objects (e.g., icebergs) on the ocean surface and to estimate its motion parameters, such as radial speed and heading. The motion estimation results are compared to those obtained using the newly implemented Dual-Channel Polarimeric GMTI modes on RADARSAT-2. Unlike the ship wake approach, the proposed technique is applicable to and successfully demonstrated for both C-band and X-band radars (RADARSAT-2 and TerraSAR-X) and it is not dependent on the angle of incidence to achieve a good signal-to-clutter ratio and ship detectability. Physical mechanisms giving rise to ship “shadows” are also discussed.
机译：提出了一种新的舰船检测，识别和运动估计方法，并结合了极化技术和GMTI技术从航天平台上进行了演示。使用标准的双极化SAR，该新方法利用了移动船舶的交叉极化图像中的亮“阴影”及其方位角偏移的图像，以将其与地面上其他静止或准静止的物体（例如冰山）区分开来。并估计其运动参数，例如径向速度和航向。将运动估计结果与在RADARSAT-2上使用新实施的双通道对立GMTI模式获得的结果进行比较。与舰船唤醒方法不同，该建议技术适用于C波段和X波段雷达（RADARSAT-2和TerraSAR-X），并已成功进行了演示，并且它不依赖于入射角来获得良好的信号，杂波比和舰船可检测性。还讨论了导致船舶“阴影”的物理机制。

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