Synthetic-Aperture Radar Imaging

Wow, stepped-frequency synthetic radar imaging using FFTs... I never thought I'd see that on HN...

My PhD and PostDoc were on SAR and ISAR imaging, doing maximum likelihood phase corrections before the FFTs to reduce motion blur.

I was sponsored by the Australian Defence Science and Technology Organisation. My summer holidays were at the Edinburgh airforce base near Adelaide, with a van full of radar gear snapping stepped-frequency radar reflections from aircraft coming in to land.

(If anyone from my time as DSTO sees this, say hi... my email address is in my profile)

There's a link to another article about the hardware at the bottom. There are good entry points for overcoming the SDR/DSP learning curve for this article to make sense.

[0] https://news.ycombinator.com/item?id=25060152