Improvements in or relating to electronic timing systems

Details Improvements in or relating to electronic timing systems Improvements in or relating to electronic timing systems

G - Physics

04

F

G04F 10/00 (2006.01) G01C 5/00 (2006.01) G01S 5/14 (2006.01)

Patent

CA 2344584

A time offset measurement system for the timing of events at spaced apart locations comprising at each location, a dual frequency Global Positioning System (GPS) receiver, wherein both the GPS receiver and the antenna are dual frequency (L1, L2), and the former is capable of both Coarse Acquisition (C/A) Code and carrier phase measurements, a frequency reference source giving local time, a data-logger for logging GPS data, a Time Interval Counter (TIC) used to measure the time of a local event as defined by the frequency reference source relative to time as defined in dependence on GPS data. For each pair of sites the system determines a primary time-offset figure based on a direct signal path between the sites, and a secondary time-offset figure based on at least one indirect signal path between the sites, in order to confirm system operation.

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