Comment by georgefrowny

What would a radar constellation look like that could see everything on earth to a metre or so resolution? Thousands and thousands of satellites all with big phased array radios and solar panels and batteries.

What do you need to distill a 24/7 stream of everything on Earth in roughly 1m^3 voxels into data like humans and vehicles? Bearing in mind the data torrent is gigantic and can't always be reliably downlinked: co-orbital AI.