Land Surveyor Community Forum

Replies

• Land Surveyor

  trout March 29, 2017 at 11:59am

  Thank you!
• Land Surveyor

  Daniel D Evans March 27, 2017 at 9:07pm

  2005 - I don't think the precise orbits are available for a week or so. The rapid orbits are available at midnight Greenwich time.

  6009 - Have you tried manually choosing which base stations to use? Also, are you just looking for a combined grid factor? I'll usually run RTK and then run a 20 minute static session on one of the points as a rough check and to get a CGF from OPUS. If you just need the CGF then:    

  CGF = SCALE FACTOR * ELEVATION FACTOR

  ELEVATION FACTOR =  R/(R+H)

  R= 20,906,000

  H= ORTHO HEIGHT (just use an average elevation of the site)

  You can get the scale factor out of Civil3D with the Geodetic Calculator tool or from here http://www.ngs.noaa.gov/TOOLS/spc.shtml.

  I wouldn't use this for control, but maybe for a manhole you forgot to locate conventionally and want to push it out to a ground distance on a small site.
• Land Surveyor

  J. Anthony Cavell March 27, 2017 at 7:51pm

  If the prevous advice does not work, Try trimming 1-5 minutes off the beginning and end of your RINEX file.
  JAC
  • Land Surveyor

    trout > J. Anthony Cavell March 29, 2017 at 11:59am

    Thank you!
• 

  Kevin D. Allen March 27, 2017 at 6:28pm

  the 2005 error is common - wait a few hours until after the end of the UTC day and try again - OPUS system hasn't updated yet.

  on the 6009 error - can you look at the data yourself?  if so look for the data slice thats got the longest stretch of 6 or more sats and lowest RMS error.  Trim the data file down to a few minutes before and after the good data and then resend.  But be sure you've still got at least 20 minutes of data.

  It never used to be a problem to clean sessions up like this
• Land Surveyor

  Allen Kerley March 27, 2017 at 5:53pm

  How long was your session?  Also, you need to wait at least 17 hours from end of session before sending to OPUS.
• Land Surveyor

  Jason Toothman March 27, 2017 at 5:30pm

  Also re-submit after 5 pm est the day after you logged the point. See if that improves things.
• Government Professional

  Joe Evjen March 27, 2017 at 5:13pm

  Try hacking off a minute or three from the front or back end of the observation.

  WinTEQC Editor at teqc.silkwerks.com/ is one way to manipulate RINEXv2-formatted files.

  

  WinTEQC Editor
• 

  Benjamin J Everett March 27, 2017 at 5:13pm

  Run through you're settings again for the base/reciever. Getting your types mixed in the settings will cause this problem. After this continue on with another observation and try to process the data set again.