Dual Detection Scheme for Compressive Receivers.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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Undesired spurious noise signals appearing in the dispersive delay line DDL of a compressive receiver are suppressed and the dynamic range of the receiver is significantly increased by utilizing parallel channels of processing in combination with a signal comparator. Each channel contains a different weighting filter which accordingly modifies the signal passing therethrough. The weighting filters are selected to produce a reversal as to the signal having the largest relative amplitude at a time nearly coincident with the main lobe of the DDL created pulse. Thereby, the comparator produces a square wave form pulse which is nearly coincident in time with the main lobe of the DDL pulse, yet suppresses the adjacent spurious side lobes of the signal being processed in the receiver. Author
- Non-Radio Communications