[aidenn0]

I recall a post on HN about a decade ago where someone made an SAR by modifying one of those toy radar-guns into an FM CW Radar and mounting it on his bike. After trying a few different position-estimation algorithms, he got the best results just by maximizing the contrast.

[ThomasPw]

RE "....a post on HN about a decade ago ...." I tried to find (search ) this post but could not...

[defrost]

Homemade synthetic aperture radar (2015) - https://news.ycombinator.com/item?id=10387360

https://hforsten.com/homemade-synthetic-aperture-radar.html

https://hackaday.com/2019/08/15/bike-mounted-synthetic-apert...

[aidenn0]

That's the one. I remember it was of a football field. Apparently I was confusing it with a different article where the FMCW radar was made from a modified toy radar gun though, since this radar appears to be made from scratch.