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Trimble static data and OPUS issues

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Last Post by Steve Corley 12 years ago

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Raybies

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I'm hoping to find a higher survey nerd to assist with this issue. Our DOT mandates primary control is submitted to OPUS for a solution. (Fine, sure, I still process the network myself to check, I digress)

I'm having an incredibly difficult issue with a file from a R6-2 receiver. Every time I submit the file to OPUS, it states: "The file xxxx seems to have a collection interval of 257 seconds!
The collection interval must be 1,2,3,5,10,15 or 30 seconds to be processed by OPUS."

First, I tried multiple different options with Trimble's convert to RINEX utility. No luck, same error every time. Then I fell back to 'ol reliable, teqc. Using teqc, I attempted to force different intervals directly from the DAT file. -O.dec or -O.int and trying various, OPUS accepted, intervals. Again, the same error.

I couldn't figure out the issue. The crew was going back onsite a week later, so they collected another 3+hr session, this time with a R8-4 receiver.

OPUS is giving me a similar issue except stating it detects a 51 second interval. Again, I used convert to RINEX and teqc with no resolution. We collect @ 1 second intervals (so we can decimate later, if needed). The files were downloaded directly to my desktop from the receivers using data transfer. All Trimble software was updated to the latest version two weeks ago.

Thanks for your assistance,
~Ray

Posted : August 19, 2014 6:46 am

CliffB

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I would suggest that you examine the Rinex file to see if the time interval between the first and second data epoch. Sometimes there can be an epoch that does not get recorded and can mess up OPUS. I think OPUS determines the recording interval by examining only the first tow epochs!

Posted : August 19, 2014 8:03 am

lee-d

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Are you using the most recent version of Trimble's RINEX utility?

Send me the files at ldrennan AT mphinc DOT com and I'll be happy to look at them.

Posted : August 19, 2014 8:08 am

Raybies

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This worked flawlessly. I deleted the first epoch of any files that were experiencing the error and OPUS was able to process them.

Cliff, thanks for the insight!

~Ray

p.s. I did find this nice page on the RINEX 2.11 format: RINEX v2.11

Posted : August 19, 2014 11:25 am

Raybies

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Lee, see the comment above. Simply deleted the first epoch of the RINEX file resolved the issue. If you would still like to see the files, I will gladly send them.

Thanks,
~Ray

Posted : August 19, 2014 11:28 am

lee-d

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That's OK glad you got it sorted out. I'd sure be curious to know what caused that though, I've never seen it.

Posted : August 19, 2014 12:10 pm

wayne-g

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Trimble static data and OPUS issues - OPUS Projects

I would highly recommend the recently new and improved OPUS Projects tool. You'll have to attend a 1 1/2 day seminar that NGS sponsors in order to get the passcodes, etc. The one I went to was free, but the local chapter who served lunch, coffee, had the space for the 20 plus of us attendees, did have a token fee of $35. Darn, it was in Las Vegas.

Well worth the effort, time and expense. Especially if you are now mandated to run OPUS with everything. With OPUS Projects, you just submit the static data per their requirements and they do all the CORS station input, least squares, and you are on page one with NGS and whatever version they're on. Which it sounds like is the objective. They even will provide back dated information if you provide it from, oh let's just 5 or 10 yrs ago, and all the conversions to get current.

Pretty cool. Check it out at the NGS website.

Posted : August 19, 2014 12:50 pm

Mapman

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Trimble static data and OPUS issues - OPUS Projects

OPUS Projects Class Schedule

Posted : August 19, 2014 1:23 pm

Steve Corley

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Trimble static data and OPUS issues - OPUS Projects

I have used OPUS Projects a lot, and it is a very powerful tool. I would like to encourage people to attend the training. We also need to encourage NGS to turn on the share option by taking their survey on the web site and suggesting it. It provides a better solution than just OPUS or OPUS DB.

Posted : August 19, 2014 9:17 pm