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US 4,566,010 AGranted
Processing arrangement for pulse compression radar
AssigneeRaytheon Company
InventorJohn D. Collins
Life of this patent
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Abstract
An arrangement is shown to process mainlobe echo signals and range sidelobe signals in the receiver of a pulse compression radar by first converting such signals to a set of digital numbers and then correlating, number by number, such set with a set of reference numbers describing the mainlobe echo signals and the negative of selected range sidelobe signals.
Claims2
In a phase-coded pulse compression radar transmitting an N-bit sequence of pulses to provide an aperiodic coded signal, an arrangement for processing echo signals to suppress selected range sidelobes, such arrangement comprising:
- (a) a waveform generator, actuable during each interval between coded transmitted signals, for forming a first set of N+M digital numbers, such set consituting a reference code representative of the complete N-bit sequence of pulses followed by the first M bits of such sequence, where M is an integer, less than N, corresponding with the number of sidelobes to be cancelled;
- (b) analog-to-digital converter means, responsive to the echo signal and signals in the range sidelobes, for forming a second set of digital numbers representing the echo signal and signals in all range sidelobes;
- and
- (c) digital correlator means, responsive digit by digit, to the first and the second set of digital numbers to produce a third set of digital numbers representative of the echo signal and the signals in all range sidelobes, less the signals in the selected range sidelobes.
1 more element
Dependencies are inferred from the claim text.