Communications: directive radio wave systems and devices (e.g. – Clutter elimination – Mti
Patent
1989-11-06
1990-12-04
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
Mti
342202, G01S 13524, G01S 728
Patent
active
049757067
ABSTRACT:
A radar system adapted to operate with a selected one of a plurality of pulse repetition intervals to produce a corresponding train of transmitted pulses of radio frequency energy in response to a train of trigger pulses and to receive returns from objects in response thereto, with returns from stationary objects producing signals with the same phase shift relative to the phase of a reference signal. The system includes a switching circuit responsive to a signal representative of the selected one of the pulse repetition intervals, for producing charge controlling signals with time intervals between the charge controlling signals and the trigger pulses being selected in accordance with the selected one of the pulse repetition intervals. A pulse forming network, is provided for storing energy in response to the charge controlling signals and for providing output pulses in response to the trigger pulses. The transmitted pulses of radio frequency energy are produced in response to the output pulses, with signals produced in response to stationary objects having the same phase shift relative to the phase of a reference signal.
REFERENCES:
patent: 2738424 (1956-03-01), Mortley
patent: 2782372 (1957-02-01), Barditch
patent: 2809286 (1957-10-01), Philpott et al.
patent: 2983882 (1961-05-01), Hoover
patent: 4283790 (1981-08-01), Clock et al.
patent: 4774517 (1988-09-01), Cervone et al.
Barron Jr. Gilberto
Raytheon Company
Sharkansky Richard M.
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