First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995
First results of auroral tomography from ALIS-Japan multi-station observations in March, 1995
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1995 年 3 月 ALIS-Japan 多站观测的极光断层扫描的第一个结果
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
B. Gustavsson
中科院分区：
文献类型：
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作者：
T. Aso;M. Ejiri;Akira Urashima;H. Miyaoka;Å. Steen;U. Brändström;B. Gustavsson
极光层析观测是瑞典和日本于1995年3月联合开展的一项国际活动。在地理上相距约50公里的较高纬度地区，瑞典ALIS的三个无人站(基律纳、梅拉杰尔维、特豪特亚斯)和日本的两个国际协调理事会站点(阿比斯科、日卡洛克塔)使用电荷耦合器件相机拍摄557.7 nm波长的多站单色层析成像图像。所有的摄像头都指向一个预先确定的方向，以确保一个共同的视野。多站成像系统已经同步拍摄了几张极光弧线的图像，其中大部分是基律纳上方的核心区。利用代数重建技术对四点图像进行了层析反演分析。曲线弧线和双弧线系统的重建表明，这项技术在恢复三维极光光度方面有很好的应用前景。
Auroral tomography observations have been carried out in March, 1995, as a joint international campaign between Sweden and Japan. Three unmanned Swedish ALIS stations (Kiruna, Merasjärvi, Tjautjas) and two Japanese JICCD sites (Abisko, Nikkaluokta), geographically separated by about 50 km at higher latitudes, were operated to capture multi-station monochromatic tomography images at 557.7 nm wavelength using CCD cameras. All cameras were pointing to one of the predetermined directions to secure a common field of view. Several images of auroral arcs, mostly for the core region right above Kiruna, have synchronously been taken by the multi-station imaging system. Tomographic inversion analysis for four-point images was carried out using the algebraic reconstruction technique. Reconstructions of a curved arc and of a double arc system suggest promising application of this technique to the retrieval of three-dimensional auroral luminosity.