![]() ![]() may also require firmware updates or hardware replacement in order to properly handle the rollover. ![]() In addition to the high-precision receivers detailed in this article, devices such as seismometers, dataloggers, cellular modems, internet routers, etc. There is also information below regarding some seismological and cellular devices.Īs the gps.gov presentation states, the best course of action for all owners of GPS receivers and any other hardware that uses GPS for timing or geolocation is to "Trust but Verify" by directly contacting the manufacturer of any such hardware for advice. The purpose of this UNAVCO Knowledge Base article is to educate operators of high-precision GPS receivers about any necessary action. The journal Nature has published an article detailing the impacts of the rollover on the global scientific community, GPS glitch threatens thousands of scientific instruments, which cites UNAVCO. Department of Homeland Security has issued a bulletin regarding the use of GPS for timing purposes. The official presentation on the issue from gps.gov details the issue, and the U.S. Preparing GPS/GNSS Receivers and Hardware for the ApGPS Week Number Rollover (WNRO)Īt 23:59:42 UTC on (Midnight GPS time, which differs by 18 leap-seconds from UTC), the 10-bit GPS Week Number broadcast by the constellation reset to zero for the second time since the beginning of GPS on. ![]()
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