for when you think you're getting decent GPS data, in a remote, hard to get to, almost impossible to traverse to location, and then you bring it back, submit to OPUS, and find out it's crap, and can't be processed?
At least it's friday
Be sure to wait a day or two for the orbits to download or something and try OPUS again. ?ÿSaid the extremely novice OPUS user. ?ÿUsed it once in 2014 and again this week.
The term is do-it-yourself.?ÿ
Do you have a way to process it in-house?
?ÿ
?ÿ
I only use OPUS as a check these days, now that all our gear is full GNSS. We get better and more consistent results, with less data, in worse conditions, by processing it ourselves.
Have you tried submitting it to CSRS-PPP or Trimble RTX-PP? Sometimes they will return results when OPUS won't.
Javad. DPOS.?ÿ
BAM!
🙂
Nate
I only use OPUS as a check these days, now that all our gear is full GNSS.
OPUS is still using only GPS L1/L2, not GNSS. Therefore you are getting no benefit from your Upgrade with OPUS. This is maybe why CSRS-PPP?ÿor?ÿTrimble RTX-PP will return results when OPUS won't.
?ÿ
From NGS website:
OPUS to add GNSS Constellations
The NGS processing engine for static surveys,?ÿPAGES, is being rewritten to incorporate GNSS constellations besides GPS, as well as other housekeeping improvements.
OPUS Projects 5.0 to add Real-Time Kinematic (RTK) Data
NGS is currently working to further develop OPUS-Projects so that users can upload GNSS vectors, including vectors derived in real-time from either a single-base setup or from a real-time network. The vectors can be uploaded for evaluation, quality assessment, and inclusion in a GNSS survey network for least squares adjustment.
OPUS is still using only GPS L1/L2, not GNSS. Therefore you are getting no benefit from your Upgrade with OPUS.
Yep, that was my point. For some reason surveyors at my firm have an obsession with OPUS, and since most of em don't understand GNSS processing or adjustments, they like to see a report in the project. I barely look at them any more...
?ÿ
When I started OPUS was not available. I got used to doing my own thing. Then later using OPUS when it was requested or for a check. I would rather download and process it myself.?ÿ
I suppose if it's not something you're trained to do OPUS is an option.
Before you write off the data as crap because OPUS chokes on it, it helps to download the raw observations into TBC or your favorite post processing software and look at the time view of the individual satellites data streams. Frequently you find a host of cycle slips in one or more SVs that once disabled makes all the difference processing. You can also parse the observations down into 15 minute segments and submit them for an OPUS-Rs solution individually, some of the segments will fail to process but a good portion will return good results. On the other hand, it could all be so noisy it's next to worthless but unless you were set up under a bridge, not bloody likely.?ÿ
I've found TEQC to be very handy for this?ÿ
https://www.unavco.org/software/data-processing/teqc/doc/UNAVCO_Teqc_Tutorial.pdf
Just because I'm paranoid, doesn't mean they aren't out to get me.
Thanks for all the advice.?ÿ I posted more along the lines of, when things don't go as easy as you think they are