> There is: There is a 13bit week number in message type 10. Attila,
Well, yes and no. Yes -- paragraph 30.3.3.1.1.1 in www.gps.gov/technical/icwg/IS-GPS-200D.pdf describes a 13-bit extended week number. No -- because this is part of the new CNAV format and existing GPS SV do not transmit that information. Interesting links and PDF's if you google: "Transmission Week Number" CNAV https://lists.ntpsec.org/pipermail/devel/2017-April/004331.html https://lists.nongnu.org/archive/html/gpsd-dev/2016-07/msg00002.html > The new 13-bit week number is only provided by the new "CNAV" data, > which in turn is (or will be) available only in newly added GPS signals. > Based on the carrier frequencies used, only the newest of the new > signals (L1C) will be available to common civilian receivers, even with > compatible hardware and firmware. This signal is unavailable from > satellites earlier than Block III, which are currently (July 2016) not > expected to begin to launch earlier than September 2016. Given that it > takes years to launch a full constellation of satellites, it's highly > unlikely that CNAV data with "operational" status will be available to > common civilian receivers in time for the April 2019 10-bit rollover. /tvb _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.