重建太阳风非均匀结构的最佳立体角
Optimal Stereoscopic Angle for Reconstructing Solar Wind Inhomogeneous Structures
摘要：
利用相关辅助重建（CORAR）方法，对太阳风非均匀结构的三维重建进行了研究。分析是基于双点日光层观测的立体HI-1相机。我们制作了合成的HI-1白光图像，在两台HI-1相机的共同视场中的不同位置包含人工斑点状结构，并使用CORAR方法重建结构。得到了$60^{\circ}$、$90^{\circ}$、$120^{\circ}$和$150^{\circ}$分离重构性能水平的分布。实验结果表明，当分离角为$120^{\circ}$时，重建效果最好，其次为分离角为$90^{\circ}$。并对结果进行了简要的讨论。基于这项研究，我们建议的最佳布局方案，最近提出的太阳环任务，这是为了定期观察太阳和内日光层从多个角度在黄道平面。
英文摘要：
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 $60^{\circ}$, $90^{\circ}$, $120^{\circ}$ and $150^{\circ}$ are obtained. It is found that when the separation angle is $120^{\circ}$, the performance of the reconstruction is the best and the separation angle of $90^{\circ}$ 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.
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