To: C.K. Houston who wrote (6490 ) 7/12/1999 11:44:00 AM From: C.K. Houston Read Replies (4) | Respond to
AIRFORCE SPACE COMMAND successfully tested GPS satellites Block II and IIAs" ...navcen.uscg.mil Another take on SAME test. In April, the Space Command experienced problems when it conducted a test on one of the 24 satellites in the GPS constellation. Scientific institutions that belong to the International GPS Service (IGS), which maintains a worldwide network of 200 GPS receivers that measure tectonic plate movements and provide centimeter-level accuracy to surveyors, reported widespread problems during the April tests. "A disturbingly large number of receivers in the global network had problems,'' one user told Federal Computer Week . Message 10002428 IMPORTANT INFORMATION FOR GPS USERS dot.gov Timing errors due to the lack of synchronization, in fact, can lead to data loss and degradation and eventually to network disruption or even complete failures. Because of the interconnective and interdependent nature of networks, these problems, in turn, could impact other networks and even the Internet . house.gov FROM A GPS MANUFACTURER ...Trimble recommends that GPS not be relied upon at, after, or within the week before the Y2K and WNRO date rollovers, and until robust and accurate performance following the rollovers is conclusively established. Use of GPS products during these events is potentially hazardous. trimble.com About 40 days until GPS "end-of-week" rollover 172 days until 2000
