标题： 射电波段太阳图中的噪声 I：理论考虑 显示英文标题

标题： Noise in Maps of the Sun at Radio Wavelengths I: Theoretical Considerations

摘要： 太阳是一个强大的射电辐射源，以至于与大多数天体源不同，这种辐射可能主导射电望远镜的系统噪声。 我们概述了在射电波长下通过傅里叶合成技术形成的图谱中的噪声理论，重点是自噪声：即由源本身引起的噪声。 为了培养直觉，我们考虑单天线、两元素干涉仪以及简单极限情况下的n元素阵列的噪声。 然后我们转向讨论任意射电源在射电波段通过n元素干涉阵列观测的地图上噪声分布的问题。 我们在另一篇论文中探讨了自噪声对太阳观测的影响。 显示英文摘要

摘要： The Sun is a powerful source of radio emissions, so much so that, unlike most celestial sources, this emission can dominate the system noise of radio telescopes. We outline the theory of noise in maps formed by Fourier synthesis techniques at radio wavelengths, with a focus on self-noise: that is, noise due to the source itself. As a means of developing intuition we consider noise for the case of a single dish, a two-element interferometer, and an n-element array for simple limiting cases. We then turn to the question of the distribution of noise on a map of an arbitrary source observed at radio wavelengths by an n-element interferometric array. We consider the implications of self-noise for observations of the Sun in a companion paper.