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A comment on Synthetic aperture radar autofocus and calibration.

Re:Synthetic aperture radar autofocus and calibration by aidenn0 on Saturday October 11, 2025 @01:17PM (#45550869)
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.
[ Parent | on HN ]
Re:Synthetic aperture radar autofocus and calibration by ThomasPw on Sunday October 12, 2025 @02:50AM (#45555892)
RE "....a post on HN about a decade ago ...." I tried to find (search ) this post but could not...
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Re:Synthetic aperture radar autofocus and calibration by defrost on Sunday October 12, 2025 @03:04AM (#45555948)
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...

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Re:Synthetic aperture radar autofocus and calibration by aidenn0 on Sunday October 12, 2025 @01:10PM (#45559839)
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.
[ Parent | on HN ]