Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1980-04-24
1985-06-04
Cangialosi, Sal
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 77, G01S 730, G01S 1352
Patent
active
045217793
ABSTRACT:
A system for polyphase encoding transmitted pulses of energy and for decog the received signals to enhance returns from the range interval being examined during a particular processing period and attenuate returns from contiguous range intervals (pulse compression). The system includes a decoding device which comprises a delay circuit having N distributed outputs including its input for producing a uniform delay between adjacent outputs corresponding to N inputted elements of a received phase-coded signal of length N.sup.2 ; a conjugator circuit coupled to the first N/2 successive outputs of the delay circuit; a first signal-combining circuit coupled to the conjugator circuit and to the last N/2 successive outputs of the delay circuit; a multiplier circuit coupled to the first signal-combining circuit; and a second signal-combining circuit coupled to the multiplier circuit. The decoding device provides a decoding phase shift -.DELTA..phi..sub.k,p to the signal elements of the phase-coded signal wherein
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Beers Robert F.
Cangialosi Sal
Ellis William T.
Klein Alan P.
Sotomayor John B.
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