The Global Oscillation Network Group (GONG) Project
The Global Oscillation Network Group (GONG) Project
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DOI：
10.1126/science.272.5266.1284
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发表时间：
1996-05
期刊：
影响因子：
56.9
通讯作者：
J. Harvey;F. Hill;R. Hubbard;J. R. Kennedy;J. Leibacher;J. Pintar;P. Gilman;R. Noyes;A. Title-A
中科院分区：
文献类型：
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作者：
J. Harvey;F. Hill;R. Hubbard;J. R. Kennedy;J. Leibacher;J. Pintar;P. Gilman;R. Noyes;A. Title-A
日震学需要长时间近乎连续地观测太阳表面的振荡，以获得太阳正常振荡模式的精确测量。 GONG 项目从分布在世界各地的六台相同仪器组成的网络获取速度图像。 GONG网络于1995年10月开始全面运行。与单站观测相比，它的占空比达到了89%，光谱伪影的功率降低了280倍。仪器噪声小于观测到的太阳背景。
Helioseismology requires nearly continuous observations of the oscillations of the solar surface for long periods of time in order to obtain precise measurements of the sun's normal modes of oscillation. The GONG project acquires velocity images from a network of six identical instruments distributed around the world. The GONG network began full operation in October 1995. It has achieved a duty cycle of 89 percent and reduced the magnitude of spectral artifacts by a factor of 280 in power, compared with single-site observations. The instrumental noise is less than the observed solar background.