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OPUS Output Page

A sample OPUS Output Page is shown below.  An explanation of each of the items that appears in the output page follows the sample page.
 
 

 NGS OPUS SOLUTION REPORT
========================

USER: Your.email\@somewhere.com DATE: August 07, 2003
RINEX FILE: gait2080.03o 000100193 TIME: 16:57:26 UTC
 
SOFTWARE: page5 0203.19 ./master.pl START: 2003/07/27 00:00:00
EPHEMERIS: igr12290.eph [rapid] STOP: 2003/07/27 23:59:00
NAV FILE: brdc2080.03n OBS USED: 45655 / 47140   : 97%
ANT NAME: NGSD/M+GP60 # FIXED AMB:   178 /   194   : 92%
ARP HEIGHT: 0.0 OVERALL RMS: 0.025 (m)
 
REF FRAME: NAD83(CORS96)(EPOCH:2002.0000) ITRF00  (EPOCH:2003.5685)
X:      1095790.767(m)   0.012(m)           1095790.117(m)   0.012(m)
Y:     -4831327.994(m)   0.016(m)          -4831326.543(m)   0.015(m)
Z:      4003934.360(m)   0.010(m)           4003934.240(m)   0.011(m)
 
LAT:   39  8  2.34041      0.004(m)        39  8  2.36929      0.004(m)
E LON:  282 46 44.48118      0.008(m)       282 46 44.46815      0.008(m)
W LON:   77 13 15.51882      0.008(m)        77 13 15.53185      0.008(m)
EL HGT:        108.862(m)     0.020(m)             107.577(m)     0.020(m)
ORTHO HGT:        140.591(m)     0.032(m) [Geoid99 NAVD88]
 
UTM:      Zone 18
NORTHING:    4333993.902(m)
EASTING:     308035.018(m)
 
US NATIONAL GRID DESIGNATOR: 18SUJ0803533994(NAD 83)
 
SPC:      Zone 1900(MD)
NORTHING:     162903.080(m)
EASTING:     308035.018(m)
 
BASE STATIONS USED
PID DESIGNATION LATITUDE LONGITUDE DISTANCE(m)
AI7403 USNO U.S. NAVAL OBSERV CORS ARP N385508.236 W0770358.396 27376.3
AF9646 GODE GODDARD SPACE CTR CORS ARP N390118.189 W0764936.575 36312.6
AJ4426 ANP1 ANNAPOLIS 1 CORS ARP N390037.004 W0763633.281 54691.0
 
NEAREST NGS PUBLISHED CONTROL POINT
AF9522 GAITHERSBURG CORS ARP N390802.340 W0771315.518 0.1
 
This position was computed without any knowledge by the National Geodetic
Survey regarding equipment or field operating procedures used.

 

OPUS Diagnostics Messages:
 OPUS will write any error or warning messages to the top of the output page. In the event of an error, your data will be examined by data analysts to try to improve OPUS reliability.  A solution will, hopefully, be sent in a few days.
   
USER:
 Your email address is listed here
RINEX FILE:
 The RINEX observation file name and an Opus sequence number which ties the Opus solution to your submission
DATE:
 The date this solution was run
TIME:
 The Universal Time (UTC) the solution was run
   
SOFTWARE:
 The version of PAGES used for this processing
EPHEMERIS:
 The ephemeris file selected to process the data
NAV FILE:
 The RINEX navigation file selected
ANT NAME:
 The antenna name selected
ARP HEIGHT:
 The height you entered in meters from the monument to the antenna reference point 
   
START:
 The date & time your data started
STOP:
 The date & time your data ended
OBS USED:
 The number of usable observations / the number of total observations in your data
# FIXED AMB:
 The number of fixed ambiguities / the total number of ambiguities
OVERALL RMS:
 The formal statistical root mean square error of your solution in meters
   
REF FRAME:
 Under the NAD83 heading are coordinates referenced to NAD83.
X:

Y:

Z:

 The NAD83 Cartesian coordinates and peak-to-peak errors in meters
For a explanation of peak-to-peak errors visit
http://www.ngs.noaa.gov/OPUS/discussion.html and scroll down to What is the accuracy of the result ?"
LAT:

E LON:

W LON:

ELLIPSOID HGT:

 The NAD83 geodetic coordinates (height is in meters) and peak-to-peak errors (in meters).  The GRS80 ellipsoid is used in the calculations.
For a explanation of peak-to-peak errors visit
http://www.ngs.noaa.gov/OPUS/discussion.html and scroll down to What is the accuracy of the result ?"
ORTHO HGT:
 The orthometric height (in meters) obtained by combining the ellipsoid height with the geoid height from the specified geoid and vertical datum.
   
NORTHING:

EASTING:

 The Universal Transverse Mercator (UTM) coordinates (in meters) are listed along with the UTM zone that was used. If a State Plane Coordinate (SPC) code was also specified, these coordinates are also listed along with the SPC Zone that was selected.
   
REF FRAME:
 The following coordinates are in the specified ITRF coordinates for the indicated epoch.
X:

Y:

Z:

The ITRF Cartesian coordinates and peak-to-peak errors in meters
LAT:

E LON:

W LON:

ELLIPSOID HGT:

The ITRF geodetic coordinates (height is in meters) and peak-to-peak errors (in meters).  The GRS80 ellipsoid is used in the calculations.
   
US NATIONAL GRID DESIGNATOR:
See http://www.fgdc.gov/standards/status/usng.html for details.
   
BASE STATIONS USED:
 The positions of 3 selected CORS reference sites are listed here along with the interstation distance.
   
NEAREST NGS PUBLISHED
CONTROL POINT:
 The closest published station listed in the NGS Integrated Data Base (IDB) to your position is identified here along with the distance to that station.
National Geodetic Survey - OPUS Team
Last modified: September 20, 2002
http://www.ngs.noaa.gov/OPUS/output_descr.html