system
Given the following post, respond as if you're commenting on Reddit:
human
Can you enlarge the radar cross section of a aircraft?

So if stealth works my making your radar cross section smaller thus having you register as a much smaller object than you really are, can you do the opposite and say make a smallish drone appear as the size of a fighter/bomber to feint an oncoming attack?
gpt
Sure.

For a common example, look at radar reflectors for sailboats.  

Fibreglass sailboats don’t give much radar return at all, but they usually have right-of-way and can’t/won’t yield to motor vessels.  A recipe for disaster.  So, sailboats use radar reflectors to make them appear on commercial radar scopes.

These reflectors add lots of flat hard panels and orthogonal surfaces to give a strong radar return.  You could do something similar to an airframe.