Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1974-12-16
1976-04-06
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5SM, G01S 942
Patent
active
039493989
ABSTRACT:
An instantaneous gain controlling system particularly for coherent (MTI) radar systems. A gain controllable intermediate frequency amplifier, a COHO, and a phase detector are shown along with an MTI canceller which itself includes a delay device and a differencer are shown. The delay device provides a full pulse repetition period of delay, and the differencer operates to subtract the coherent video at the phase detector output from the same signal train, one pulse repetition interval earlier, to provide MTI cancellation. The delayed video train is full wave rectified, passed through a threshold circuit and an adjustable gain video amplifier and used as a pulse-by-pulse gain controlling signal for the intermediate frequency amplifier. Large signal blocks are thus prevented from overloading the receiver channel with consequent spectral spreading and MTI cancellation degradation.
REFERENCES:
patent: 2798949 (1957-07-01), Scholz
patent: 3162814 (1964-12-01), Adsen et al.
patent: 3220002 (1965-11-01), Shrader
patent: 3863240 (1975-01-01), Galvin
Hubler Malcolm F.
International Telephone and Telegraph Corporation
O'Neil W. T.
LandOfFree
MTI performance enhancement device with instantaneous automatic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with MTI performance enhancement device with instantaneous automatic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MTI performance enhancement device with instantaneous automatic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1580316