Forward-looking radar imaging is a top priority due to a variety of applications. An airborne forward-looking radar imaging approach via a modified propagator method (MPM) based on the planar phased array is proposed. It can obtain a better focusing effect without range migration correction. Through the MPM algorithm, the azimuth resolution can be enhanced greatly. Compared with the conventional synthetic aperture radar imaging algorithm, the left-right ambiguity process can be avoided by generating two-dimensional spatial spectra. Furthermore, the imaging results of different numbers of elements are given to provide an assessment of the imaging performance. Additionally, the authors proposed to apply the scanning planar phased array configuration to airborne forward-looking two-dimensional imaging for the first time. The validity of the method is proven by experiments. The image is more focused. Furthermore, the results of the experiments verify that the proposed method is fit for high-speed situation and aircraft height variation condition.

中文翻译：

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基于平面相控阵改进传播器方法的机载前视雷达成像方法

由于应用广泛，前视雷达成像是重中之重。提出了一种基于平面相控阵的改进传播器方法（MPM）机载前视雷达成像方法。无需距离偏移校正即可获得较好的聚焦效果。通过MPM算法，可以大大提高方位分辨率。与传统的合成孔径雷达成像算法相比，通过生成二维空间谱可以避免左右模糊过程。此外，给出了不同数量元件的成像结果以提供成像性能的评估。此外，作者首次提出将扫描平面相控阵配置应用于机载前视二维成像。实验证明了该方法的有效性。图像更加集中。此外，实验结果验证了该方法适用于高速情况和飞机高度变化的情况。