Leap-second cure for 1999 GPS rollover problem

Details Leap-second cure for 1999 GPS rollover problem Leap-second cure for 1999 GPS rollover problem

1996-11-12

1999-07-13

Miska, Vit

Horology: time measuring systems or devices

With calendar indicator

368 47, 368155, G04B 1924, G04C 1102, G04C 1500

Patent

active

059236183

ABSTRACT:
The timing system for GPS has a week counter that recycles at intervals of about 20 years. The first recycling will occur on Aug. 22, 1999, producing a time ambiguity in GPS signals. The invention employs a count of leap seconds to resolve the ambiguity and extends the useability of GPS in its present format by more than a century.

REFERENCES:
patent: 4768178 (1988-08-01), Conklin et al.
patent: 4823328 (1989-04-01), Conklin et al.
patent: 5220333 (1993-06-01), Penrod

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