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Your question: What is the logic behind the delay of the signal and how is the echo signal later bound with the signal sent? Short answer A PESA is an array of individual antennas. Each antenna radiates the same signal, except the phase. The phase adjustment for each antenna allows for the non-moving array to behave like if it could be rotated, i.e. the ...


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To further illustrate @mins' excellent explanation, here are some animations and simulations. Quick Raytheon marketing vid of the Air and Missile Defense Radar, a next-gen AESA for destroyers. It provides volume search, horizon search, periscope search, ballistic missile tracking, and missile guidance and target illumination, among other functions. Go to [0:...


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