Doesn't "satellite camp" sound like something NASA would set up for kids to learn about space exploration?
In this case, the term has nothing to do with stars -- at least not the ones above us. It's a reference to the standout football players attending high school camps in areas outside of where college programs are allowed to host them.
An NCAA forbids schools from holding camps outside a 50-mile radius of their campus. But nothing stops coaching staffs, especially those from Power 5 conferences, from traveling those distances to work as guests for other camps.