Imaging and Mosaicking

每一次重温傅里叶变换都有新的认识!

An offset in one domain is a phase shift in the other. \(\color{black}F(x)\) and \(\color{black}\tilde{F}(k)\) are Fourier pairs then

\[\color{black}F(x-x_0)=\tilde{F}(k)e^{i2\pi x_0k}\]

换句话说,源的位置移动反应在傅里叶空间是一个相位的变化,也就是相位决定了位置。

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Calibration in Radio

觉得这个报告讲得不是很清晰详细,只弄明白了皮毛。

The calibration in this lecture deals primarily with correcting the (baseline-based) visibilities for antenna-based effects.

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