USGS CMG S-6-10-PS Navigation

 S610PS   Nav was RTK-GPS.  Yonav, time GMT  
 Only one base station was needed for the Elwha survey.  The OPUS solution 
 for the coordinates we broadcast for the survey is attached.  These 
 coordinates will be revised once the GPS data is post-processed to provide 
 better accuracy.
 
 MILL:
 
 ITRF (EPOCH:2010.1422)
 
 Lat:  N 48  08'  6.01943"
 Lon: W 123 28'  6.90674"
 Ellipsoid Ht.:  -11.355(m)
 
 -Josh
 

 OPUS TEXT FILE IN /nav/raw/opus-MILL-2010-052.txt
 The writeboard named ""MILL": Elwha SWATH bathymetry survey RTK GPS base station analysis" has been created by Tom Reiss:
 
    The following information pertains to the GPS base station
    "MILL" used for the SWATH bathymetry survey at Elwha River
    delta (Port Angeles, WA), February-March 2010.
    The base station was programmed using the following coordinates: (see
    also "elwha-base-setup.JPG")
 
    Reference Frame: WGS84 (G1150)
    Epoch: 2010.1548
    Latitude: N 48 08' 06.01943"
    Longitude: W 123 28' 06.90674"
    Ellipsoid Height: -11.355m
 
    The average values for the derived OPUS solution for
    "MILL" are:
    Reference Frame: ITRF00 [same as WGS84 (G1150)]
    Epoch: 2010.1548
    Latitude: N 48 08' 06.01936"
    Longitude: W 123 28' 06.90685"
    Ellipsoid Height: -11.351m
 
    The differences to be added to the RTK broadcast locations are:
    Latitude: -0.00007"
    Longitude: +0.00011"
    Ellipsoid Height: +0.004m
 
    Using UTM coordinates as a comparison:
    The base station was programmed using the following coordinates:
    Reference Frame: NAD83, UTM zone 10
    Epoch: 2002.0000
    Northing: 5331411.376m
    Easting: 465138.251m
    Ellipsoid Height: -11.042m
    Orthometric Height: 9.155m (based Geoid09)
 
    The average values for the derived OPUS solution for
    "BEL1" are:
    Reference Frame: NAD83, UTM zone 10
    Epoch: 2002.0000
    Northing: 5331411.374m
    Easting: 465138.249m
    Ellipsoid Height: -11.038m
    Orthometric Height: 9.159m (based Geoid09)
 
    The differences to be added to the RTK broadcast locations are:
    Northing: -0.002m
    Easting: -0.002m
    Ellipsoid Height: +0.004m
    Orthometric Height: +0.004m