Receive Beamformer • Combines conditioned transducer signals to form beams • Each beam acts as a spatial filter • Uses beam shading and beam steering to form beam sets • Each receive beam processed in its own channel • Typical beam types: – Multiple narrow detection beams – Sum-difference beams – Offset phase center beams 31 Applied Research Laboratory Receiver Channels • Each receive beam has a receiver channel • Receiver channel functions: – Band pass filtering – Gain control (historic progression in order of sophistication) • Fixed gain • Time varying gain • Automatic gain control – Detection processing within the angular space that defines that channel

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