Remote phase synchronization using a low-bandwidth timing...

Details Remote phase synchronization using a low-bandwidth timing... Remote phase synchronization using a low-bandwidth timing...

2007-09-25

2007-09-25

Alsomiri, Isam (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

C342S028000, C342S114000

Reexamination Certificate

active

10910937

ABSTRACT:
A method and apparatus for synchronized clocking between a radar receiver and a radar transmitter includes sharing a reference signal between the transmitter and receiver, dividing the common reference into a transmit clock signal in the transmitter and a receive clock signal in the receiver. The receive clock signal and the transmit clock signal are synchronized using a trigger pulse. The synchronization is performed to achieve a 180 degree phase shift between the transmit and receive clocks. Radar pulse transmissions occur on an edge of the transmit clock coinciding with the trigger pulse. A signal recorder is activated on the edge of the receive clock each time the trigger pulse is received. The signal recorder is deactivated after a fixed interval based upon the receiver clock signal.

REFERENCES:
patent: 3689156 (1972-09-01), Kerpchar
patent: 4001823 (1977-01-01), Matsui et al.
patent: 5148175 (1992-09-01), Woolfolk
patent: 5805110 (1998-09-01), McEwan
patent: 6731234 (2004-05-01), Hager et al.
patent: 2004/0178947 (2004-09-01), Richley et al.

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