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OPUS BETA-S 5.0.0
I have recently changed from a GPS manufacturer that had a very easy-to-use system for obtaining State Plane coordinates to one that does not provide that service. I have no requirement to get my projects on current SP coordinates, but I have almost always converted my GPS projects as it was so easy to do.
Consequently, I have begun to use OPUS again after a few years. I see the latest version (5.0.0) is a BETA version that does not appear to accept data which contains less than 2 hours of data.
Is there a way that I can send about 105 minutes of data to OPUS at this time? I see no reference to another (non-beta) version on the NGS site.
Thank you all, in advance, for any information you may have regarding sending data to OPUS with the current system.
JA, PLS, SoCal
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20 Replies
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I may be wrong but have always been taught that two hours was the minimum observation required to get an OPUS solution and more time is encouraged to tighten things up.
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OPUS Rapid static is for 15-min to 2 hrs I believe. Then regular opus static is 2hrs plus. All will be decimated to 30 second epochs. Unless something has changed. It’s all on the same OPUS non beta site. There is a difference in the uncertainty between the two one is peak to peak the other which all can be read through.
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7-8+ hours optimum for best results.
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I was trying to copy the link but can’t for some reason. On the main opus page at the bottom you have two options rapid static lower left and static lower right. That’s the 2 ways to have opus process raw data. Outside of opus projects. Thee rapid static will take as little as 15 minutes up to 2 hrs. Now Depending on how many CORS are near you the baseline lengths and your areas conditions how well it will work. I always tried to get 2 4 hour data sets when possible on a project. However most of the time a rapid static would have been sufficient as it was not always a requirement more of a convenient thing.
I have followed some that do 1 hour as part of the daily routine and then everything is relative to that. I would say horizontal was never a big difference but the vertical showed up some times. But again most of the time it was not a big deal as all the other data was relative.
Hope this all helps.
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https://www.ngs.noaa.gov/OPUS/
ngs.noaa.gov
OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System
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<div>Check out the part for time that may impact your results:</div>
Improving your OPUS results:
https://www.ngs.noaa.gov/OPUS/about.jsp
ngs.noaa.gov
OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System
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Thank you all for your help. This is such a great resource.
I went directly through the NGD website instead of using the link that I have that directs me to the BETA site. I sent the files to OPUS-RS, just like in the old days.
I was successful with both files that I sent.
JA, PLS, SoCal
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1. There is the regular OPUS site that comes in 2 flavors –
a) “Rapid Static”, or OPUS-RS, that resolves data sets of under 2 hours in length – and
b) “Static”, or OPUS-S, that resolves data sets of greater than 2 hours.
This site uses the US (GPS) satellite constellation only.
2. There is an OPUS-BETA site that uses multi-constellation data, but for now it only comes in the “Static” flavor. If you are not an experienced OPUS user you should probably shy away from this one for the time being.
Googling “OPUS NGS” will get you to the regular OPUS site.
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“There is an OPUS-BETA site that uses multi-constellation data, but for now it only comes in the “Static” flavor.”
The beta site only uses GPS observables. The file can contain other constellation data, but that data isn’t used (yet).
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Possibly you are thinking of OPUS Projects Beta? Because this news release seems pretty clear to me.
https://content.govdelivery.com/accounts/USNOAANOS/bulletins/3866173
content.govdelivery.com
BETA Release: OPUS-S upgraded to support multi-GNSS
BETA Release: OPUS-S upgraded to support multi-GNSS
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It looks like my information is stale. I’ll have to try it out!
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Regarding OPUS Projects, it doesn’t process any GNSS observables directly, only vectors. Observable data has to be run through OPUS first, then OP can process it in a session.
I don’t know yet if OPUS beta results can be passed to OP, but I’ll look.
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How do you get to the Beta site? I can not seem to find a link to it on NGS’s site.
Also, can you do a shared solution with the Beta. I’m trying to do an NSPS final point and the families chosen location is a pretty harsh environment. I was able to get an OPUS-RS solution with GPS only for recon purposes but I would be nice to get a multi-constellation solution on the real monument.
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https://beta.ngs.noaa.gov/OPUS/
CAUTION!!–I have stopped using the beta since 3/26/2024. (See 3/26/2024 note at the top of the page) Right after 3/26 I had it give me much worse results with beta rather than the non-beta static.
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Why just the beta version? I sent 2 sets of (2+ hr) data to both beta and current versions last week (same station) and got ~ 0.7 to 2.1 cm difference between the two observations in the beta solution both horiz and vert, while getting 2-5 mm difference between the two in the standard solutions.
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Maybe submit to AUSPOS too?
https://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/auspos
ga.gov.au
AUSPOS - Online GPS Processing Service
View a free online GPS data processing service provided by Geoscience Australia.
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I have no problem getting a coordinate on the point, I would normally just post process it in Infinity. I’m trying to follow NSPS’s guide lines which require an OPUS shared solution. Kind of a mute point since the beta doesn’t appear to allow for shared solutions.
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OPUS BETA-S 5.0.0 is apparently back up and running error free:
“2024-08-13: Bugs affecting the user selection of CORSs and the downloading of the appropriate multi-GNSS ephemerides have now been resolved.”
*I have not experimented/tested since this update got posted yesterday
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This reply was modified 1 month ago by out-of-level.
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This reply was modified 1 month ago by
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Thanks for the heads up. I’ll set a receiver up behind the office and give it a try in the next couple of days.
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