Keep in mind that my prognostication was a "what would happen if" sort of thing. The people identified would need to change. They all fall into the 'care which way the earth is pointing' category. They are a tiny fraction of a fraction of 1% and would need to reengineer their operations if this change were to happen. My guess as to what would happen is just that, a guess. It shouldn't be taken as an engineering statement "since I don't think much bad will happen, this will be OK" but rather "if this were to happen, these folks must change."
Warner On Jan 17, 2012, at 11:27 AM, Rob Seaman wrote: > Steve Allen wrote: > >> Warner Losh hath writ: >>> [*] Unless I'm an astronomer or care which way the earth is pointing to >>> sub-minute accuracy. >> >> The GPS system, and the other GNSS, must know that in order to operate. >> The satellite tracking code, the VLBI code, the LLR code have all been >> written and operated in the presence of leap seconds. The absence of >> leap seconds could compromise the infrastructure that supports GPS. > > See Stephen Malys's* presentation and paper: > - > http://www.cacr.caltech.edu/futureofutc/program/presentations/AAS_11-675_Malys.pptx.pdf > - > http://www.cacr.caltech.edu/futureofutc/preprints/32_AAS_11-675_Malys.pdf > > From his summary slide: > > • DoD GPS Monitor Stations, the ‘starting point’ for all GPS > Positioning, Navigation and Timing (PNT) are located on the Rotating Earth > > • A regular source of UT1-UTC predictions will continue to be needed > for NGA, GPS and other DoD Satellite Operations > > • Allowing UT1-UTC to grow beyond the current 1 sec limit > • Will require resources to modify existing ICDs and > operational software > • Offers no benefits to NGA or GPS Operations > > Rob > > * Senior Scientist for Geodesy and Geophysics, InnoVision Basic and Applied > Research Office, National Geospatial- Intelligence Agency > _______________________________________________ > LEAPSECS mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/leapsecs
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