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。
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。
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.
Fundamentals of Radio Interferometry
Notes from 18th Synthesis Imaging Workshop 2022. Rick Perley’s lectures are fantastic!