I helped MAKE Radars that can detect stealth jets! How do you think we knew they were stealth jets?
I’m surprised they haven’t thanked Obama yet for giving it to them.
I think you are correct about that. Stealth aircraft are designed to minimize signal reflection in the direction of a received radar signal. They accomplish this by deflecting and/or absorbing these radar signals. But accomplishing that performance over all possible radar operating frequencies is, if not impossible, extremely difficult. I vote for the impossible option.
As a result it is inevitable that radar systems will be developed to detect stealth aircraft. I'm sure they already exist and more are certainly on the drawing board and coming soon.