Abstract This paper is aimed at finding the best separation angle between spacecraft for the three-dimensional reconstruction of solar-wind inhomogeneous structures by the CORrelation-Aided Reconstruction(CORAR) method. The analysis is based on the dual-point heliospheric observations from the STEREO HI-1 cameras. We produced synthetic HI-1 white-light images containing artificial blob-like structures in different positions in the common field of view of the two HI-1 cameras and reconstruct the structures with CORAR method. The distributions of performance levels of the reconstruction for spacecraft separation of 60 ° , 90 ° , 120 ° and 150 ° are obtained. It is found that when the separation angle is 120 ° , the performance of the reconstruction is the best and the separation angle of 90 ° is the next. A brief discussion of the results are given as well. Based on this study, we suggest the optimal layout scheme of the recently proposed Solar Ring mission, which is designed to routinely observe the Sun and the inner heliosphere from multiple perspectives in the ecliptic plane.

中文翻译：

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重建太阳风非均匀结构的最佳立体角

摘要 本文旨在通过CORrelation-Aided Reconstruction(CORAR)方法为太阳风非均匀结构三维重建寻找航天器之间的最佳分离角。该分析基于 STEREO HI-1 相机的双点日光层观测。我们在两个 HI-1 相机的共同视野中的不同位置生成了包含人造斑点状结构的合成 HI-1 白光图像，并使用 CORAR 方法重建结构。得到了航天器分离60°、90°、120°和150°的重构性能水平分布。发现分离角为120°时重建性能最好，分离角为90°次之。还给出了对结果的简要讨论。基于这项研究，我们提出了最近提出的太阳环任务的最佳布局方案，该任务旨在从黄道平面的多个角度定期观察太阳和内日光层。