Remote calibrating system for satellite time

Details Remote calibrating system for satellite time Remote calibrating system for satellite time

1982-12-27

1986-08-19

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

370104, 455 12, 375107, 368 46, 34082514, H04Q 900, H04J 306, H04L 700

Patent

active

046072578

ABSTRACT:
A remote time calibrating system has a calibrating station with a reference time and a remote station having a local time, the local time having to be adjusted to coincide with the reference time. The calibrating station receives telemetry signals sent from the remote station, each of the telemetry signals including data indicating the local time of the remote station from which the telemetry signal is transmitted. Responsive to any first difference between the receive reference time and the local transmit time is detected and calculated by taking into account the signal propagation delay of the telemetry signal between the remote station and the calibrating station. Responsive thereto, the local time is calibrated at the remote station.

REFERENCES:
patent: 4218654 (1980-08-01), Ogawa et al.
patent: 4287597 (1981-09-01), Paynter
patent: 4292683 (1981-09-01), Jueneman
patent: 4334314 (1982-06-01), Nard et al.
patent: 4368987 (1983-01-01), Waters
patent: 4472802 (1984-09-01), Pin et al.
Time Transfer by Defense Communications Satellite, J. A. Murray, et al., pp. 186 through 193, 1971.
Time Transfer Using Navstar GPS, A. J. Van Dierendonck, et al., National Telecommunications Conference, Nov. 29-Dec. 3, 1981, pp. F9.2.1 through F9.2.10.

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