[IGSMAIL-7668] USN7 Station Online

[Mitchell, Stephen J CIV NAVOBSY, N3TS]

Dear IGS Community,



The USN7 station will resume data flow to the IGS.  Beginning at 0000 UTC on 28 August 2018, data for USN7 will be from a Septentrio PolaRx5 TR receiver with an absolute calibration determined by USNO and validated by JPL.  Data for the previous Ashtech receiver will be backfilled.



Best Regards,



--Stephen

Stephen Mitchell
Mathematician, GNSS and Network Time Transfer Division
Time Services Department

+1 (202) 762-1455
stephen.j.mitchell1 at navy.mil

<mailto:stephen.j.mitchell1 at navy.milU.S>U.S. Naval Observatory
3450 Massachusetts Ave., N.W.
Washington, DC 20392