Question

Was reading about different stealth technologies used by modern aircrafts to avoid radar detection. Wouldn't it be easier to have a receiver on the airplane listening on the radar frequencies and then re-transmit that same signal but phase shifted 180 degrees? (i.e. similar to how noise cancelling earphones work.)

Answer 1

Phase shifting is not a practical solution for stealth aircraft. Modern stealth technology focuses on reducing radar reflections and using materials that absorb or scatter radar waves.

Step-by-step explanation:

Using phase shifting to avoid radar detection, like noise-canceling headphones, is not a practical solution for stealth aircraft. Stealth technology used in modern aircraft mainly focuses on reducing the radar cross-section or RCS, which is the measure of how detectable an aircraft is by radar. This involves shaping the aircraft to minimize radar reflections and using materials that absorb or scatter radar waves. Phased array radar systems can detect and track phase-shifted signals, making them ineffective for stealth purposes.