results: 所有重建方法都超过了理论最高分辨率限制。Abstract
We investigate resolution in photoacoustic tomography (PAT). Using Shannon theory, we investigate the theoretical resolution limit of sparse view PAT theoretically, and empirically demonstrate that all reconstruction methods used exceed this limit.
摘要
我们调查了图像听觉成像（PAT）中的分辨率。使用雪伦理论，我们 theoretically investigated the theoretical resolution limit of sparse view PAT, and empirically demonstrated that all reconstruction methods used exceed this limit.Here's a breakdown of the translation:* "We investigate" is translated as "我们调查" (wǒmen tīngshì).* "resolution" is translated as "分辨率" (jiěxiàngdù).* "in photoacoustic tomography" is translated as "在图像听觉成像中" (在图像听觉成像中).* "Using Shannon theory" is translated as "使用雪伦理论" (使用雪伦理论).* "we investigate the theoretical resolution limit" is translated as "我们 theoretically investigated the theoretical resolution limit" (我们 theoretically investigated the theoretical resolution limit).* "of sparse view PAT" is translated as " sparse view PAT" (稀见视野 PAT).* "empirically demonstrate" is translated as " empirically demonstrated" (empirically demonstrated).* "that all reconstruction methods used exceed this limit" is translated as "所有的重建方法都超过这个限制" (所有的重建方法都超过这个限制).
A study on the ideal magnitude and phase of reconstructed point targets in SAR imaging
results: 该研究提出了对于单点靶和两点靶两种情况的质量和相位的定理，并通过数值例子证明了这些定理。Abstract
In this paper, the magnitude and phase of the reconstructed point targets in SAR imaging are studied quantitatively by using inverse crime. Two scenarios, one with single point target in the imaging area and the other with two point targets, are considered. The theorems on the magnitude and phase are established and proved for each scenario. In addition, several numerical examples are presented and the numerical results show that they agree with the corresponding theorems. This study is useful for appreciating the limitations of formulating inversion algorithms based on simplistic point target building blocks.
摘要
在这篇论文中，我们Quantitatively研究了SAR成像中重建点目标的大小和相位。我们考虑了单点目标和两点目标两种场景。对于每个场景，我们提出了定理，并证明了它们的正确性。此外，我们还提供了一些数值示例，数据显示它们与相应的定理一致。这种研究有助于理解基于简单点目标建立的推算算法的限制。Here's the word-for-word translation:在这篇论文中，我们Quantitatively研究了SAR成像中重建点目标的大小和相位。我们考虑了单点目标和两点目标两种场景。对于每个场景，我们提出了定理，并证明了它们的正确性。此外，我们还提供了一些数值示例，数据显示它们与相应的定理一致。这种研究有助于理解基于简单点目标建立的推算算法的限制。