Thrilled to see this because I did my PhD in radar imaging, specifically autofocusing ISAR images. My thesis describes how the math of this all works, in chapt

Thrilled to see this because I did my PhD in radar imaging, specifically autofocusing ISAR images. My thesis describes how the math of this all works, in chapters 3 and 4 of the PDF here: https://github.com/stevesimmons/phd-thesis-radar-imaging https://github.com/stevesimmons/phd-thesis-radar-imaging Here: SAR = Synthetic Aperture Radar, where the radar flies along a straight line and the apparent rotation of the ground produces a Doppler shift that can be used to get high cross-range resolution. ISAR = Inverse Synthetic Aperture Radar, where the radar is still (e.g. on the ground) and the target (e.g. a plane) is flying, and their relative motion produces a rotation of the target, which equally produces a Doppler shift that can be used to get high cross-range resolution.