Yeah dude some of the linked satellite photos are pretty clear even for a layperson and as OP says there are direct on the ground photos as well. The investigative group Bellingcat also has a pretty good history of journalism, I'd suggest you check out their background and works.

For additional info, there are multiple books written on the topic as well, ex:

https://www.goodreads.com/book/show/5968247-dragon-fighter

https://www.goodreads.com/book/show/8137115-the-uyghurs

https://www.goodreads.com/book/show/57894290-menace

You can find many more if you do a Google search