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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Cross-Range Scaling for ISAR Based on Image Rotation Correlation
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Cross-Range Scaling for ISAR Based on Image Rotation Correlation

机译：基于图像旋转相关的ISAR跨域缩放

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摘要

For better understanding of the imaging result provided by inverse synthetic aperture radar (ISAR), it is more desirable to present it from the conventional range–Doppler domain to the homogeneous range–cross-range domain. To accomplish the process of cross-range scaling, the rotating velocity (RV) of the target should be estimated first. For a uniformly planar rotating object, a novel method based on a concept of rotation correlation is proposed to obtain the RV in this letter, and neither prominent scattering centers nor phase coefficient extraction is required. Furthermore, a three-step fast-Fourier-transform-based convolution interpolation scheme is proposed to realize the above correlation, which makes the proposed method more efficient for implementation. Finally, experimental results with both simulated and real ISAR data are provided to demonstrate the effectiveness of the proposed method for different targets.
机译：为了更好地了解逆合成孔径雷达（ISAR）提供的成像结果，更希望将其从常规范围–多普勒域到均匀范围–跨范围域进行展示。为了完成跨范围缩放的过程，应该首先估计目标的旋转速度（RV）。对于均匀平面的旋转物体，提出了一种基于旋转相关性概念的新颖方法来获得该字母的RV，并且不需要突出的散射中心或相位系数提取。此外，提出了一种基于三步快速傅里叶变换的卷积插值方案来实现上述相关性，从而使该方法的实现效率更高。最后，提供了包含模拟和实际ISAR数据的实验结果，以证明该方法对不同目标的有效性。

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