I had a brain fartPosted by just-a-surveyor on December 11, 2019 at 5:52 pm
I picked up my base as it was collecting static data before shutting it down. I have never monkeyed with the observation files so am not sure the procedure to edit out the last 30 seconds.
And help would be appreciated.
- 8 Replies
- MemberDecember 11, 2019 at 6:04 pm
convert to rinex, and use a text editor (not a word processor) to remove the last few epochs.
- MemberDecember 11, 2019 at 6:06 pm
Seems like the solution would reject the bad data on its own with a static session.
- MemberDecember 11, 2019 at 6:50 pm
Do any of the common processing algorithms have outlier rejection? One 30-second epoch out of a couple hours (1/240) won’t seriously affect the result but could make a difference depending on how the processing algorithm used weights the data.
Converting to RINEX is indeed the proper route to avoid any effect. The use of the text editor is advised to avoid moving anything to a different column in the file..
- MemberDecember 11, 2019 at 7:49 pm
Not sure what software you are using, but Trimble Business Center allows you to edit session start and end times. Otherwise I agree that TEQC is the way to go.
In the past I have fixed static occupations where the receiver went out of level at some point during the session. Force continuous processing, find the (approximate) epoch at which the receiver went off level, reprocess as static and cut off session before it moved. Of course, you still need to have enough usable data…“…people will come to love their oppression, to adore the technologies that undo their capacities to think.” -Neil Postman
- MemberDecember 12, 2019 at 1:16 am
Most post softwares have extraction until. Like to make a hour file out the middle of a 6 hr file.
Start time is same, end time is whatever minutes less. But as has been pointed out, those epochs will be crazy bad and ignored.
??1100 epochs, 1095 epochs used.?
I??ve picked a recording receiver. The sat count immediately goes to 1-2, so not even in the equation.
- MemberDecember 13, 2019 at 3:25 pm
If you are talking a 2hr session, and wand to cut the last 30 seconds or even a couple minutes out for OPUS, just send the file in. It isn’t going to make a any difference in the solution.
Log in to reply.