The USAF is looking at replacing all the mechanically scanned radars with electronically scanned AESA radars.

A dirty little secret is that this would make the F-15 superior to the F-22 in some of the missions that it is most touted in, particularly cruise missile interception, because of basic physics.

The F-15 has a larger space in the nose for a radar, so the aperture, and hence resolution and range, woudl be greater.

Picture pr0n below: