This article proposes a new synthetic aperture radar (SAR), named as panoramic SAR, based on a combination of linear and rotational SARs, by which a large 360° panoramic view of the observed scene can be reconstructed. First, the system geometry and its imaging process based on the back-projection algorithm (BPA) are presented. The combined movement constitutes a 2-D synthetic aperture, and thus higher imaging resolutions can be obtained. The corresponding resolution analysis and the sampling criteria are discussed accordingly. Then, a novel dynamic piecewise compensation (DPC) algorithm, a recursive imaging process, is proposed to reduce the processing complexity significantly. The imaging implementation and the complexity are also studied respectively. Finally, a prototype of panoramic SAR is built based on an frequency-modulated continuous wave (FMCW) radar and a moving platform, and the simulation and experimental results are provided to validate the proposed panoramic SAR principle and the DPC algorithm.

中文翻译：

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全景合成孔径雷达


本文提出了一种新型合成孔径雷达（SAR），称为全景SAR，基于线性和旋转SAR的组合，通过它可以重建观察场景的360°全景。首先，介绍了基于反投影算法（BPA）的系统几何结构及其成像过程。组合运动构成了二维合成孔径，从而可以获得更高的成像分辨率。相应地讨论了相应的分辨率分析和采样标准。然后，提出了一种新颖的动态分段补偿（DPC）算法，即递归成像过程，以显着降低处理复杂度。还分别研究了成像实现和复杂度。最后，搭建了基于调频连续波（FMCW）雷达和移动平台的全景SAR原型，并提供仿真和实验结果来验证所提出的全景SAR原理和DPC算法。