Method and apparatus for determining universal coordinated time

Details Method and apparatus for determining universal coordinated time Method and apparatus for determining universal coordinated time

1992-07-02

1993-06-15

Blum, Theodore M.

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

Directive

Beacon or receiver

368 47, G01S 124

Patent

active

052203336

ABSTRACT:
A method and apparatus for determining Universal Coordinated Time from Loran-C transmissions at at least two Group Repetition Intervals. With time known to within a few seconds of Universal Coordinated Time, and position known to within approximately five miles, the present invention permits time transfer substantially to Universal Coordinated Time by receiving first and second Loran-C transmissions at first and second Group Repetition Intervals. Then, a coincidence interval between the two Group Repetition Intervals is calculated, and time is transferred to coincide substantially with Universal Coordinated Time based on the calculated coincidence interval.

REFERENCES:
patent: 4161730 (1990-07-01), Anderson
patent: 4268830 (1981-05-01), Brodeur
patent: 4636795 (1987-01-01), Dano
patent: 4999638 (1991-03-01), Schick
Austron Timing Reference Handbook, 1988, Austron, Inc., pp. 27-30.

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