Why is radar hard to detect stealth aircraft while satellite telephones easily capture signals below the thermal noise floor?

Question

Why is radar hard to detect stealth aircraft while satellite telephones easily capture signals below the thermal noise floor?

In: Engineering

Answer 1

Radar does detect stealth aircraft. Every single one of them, and at great distances. They are not invisible to radar.

However thier designs involve materials that absorb radar, and deflect it away instead of returning it to the radar station.

This results in a much smaller return to the station, often similar to the return of a large bird like an eagle it flock of birds. So it’s disguised and often filtered out to remove thousands of false positives.