As I recall the process, you check Share when submitting the data file, and get a screen to enter description and pictures.?ÿ After you do that there should be an email (usually withing the hour) with a link to an approval page, where you can either edit or approve the submission.?ÿ After that, usually within the day, an email sent notice that it was approved.?ÿ It's been a while since I submitted any, though.
Look for it in the Share list to see if that process was completed.
https://geodesy.noaa.gov/OPUS/view.jsp
I realize that reprocessing with precise eph makes small to no difference with OPUS CORS, and slight difference in error estimate. And only a little difference with PPP solutions.
For GPS on BM I would think for those solutions precise eph processing would be beneficial.?ÿ
In my neighborhood there??s plenty of CORS. so 1 hr solutions, or 3hr, are only mm ?ÿdifferent. I could do 2 hr GPS on BM.
I realize that reprocessing with precise eph makes small to no difference with OPUS CORS, and slight difference in error estimate. And only a little difference with PPP solutions.
For GPS on BM I would think for those solutions precise eph processing would be beneficial.?ÿ
In my neighborhood there??s plenty of CORS. so 1 hr solutions, or 3hr, are only mm ?ÿdifferent. I could do 2 hr GPS on BM.
Oh my, you are trying to apply common sense. Stop it.
Basically NGS doesn??t deal with data shorter than 4 hours and they like 12 hours for their data. Once time gets to 12 hours, calculations settle down.
well in crowd sourcing gps on bm, and more than enough obs at 4+ hrs is collected, then I guess more 2 hr data is a filter.?ÿ
I realize that reprocessing with precise eph makes small to no difference with OPUS CORS, and slight difference in error estimate. And only a little difference with PPP solutions.
For GPS on BM I would think for those solutions precise eph processing would be beneficial.?ÿ
In my neighborhood there??s plenty of CORS. so 1 hr solutions, or 3hr, are only mm ?ÿdifferent. I could do 2 hr GPS on BM.
Oh my, you are trying to apply common sense. Stop it.
To be fair, while we might think "anything is better than nothing", in their world, they are (understandably) hesitant to mix data types. As state above, 4 hours is probably not a random requirement. As I am not an expert in what they do, it seems non-sensical, but my comment above was part real, part sarcastic. Common sense applies to our own world and experiences, and isn't always true when we move outside our area of expertise.?ÿ
We may measure stuff on the earth, but as a surveyor, most of us are not doing the work that a scientist at NGS is doing.
You do an ALTA, run a traverse and balance, know your precision and accuracy, and ready to go...then your crew goes out and runs an open traverse to pick up a monument.?ÿ What then? Can you just use the info because it is better than nothing??ÿ It needs to be checked. So, we apply the same concepts to our own work.
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4 hours is an old standard, the GPS world has moved on and it's not something that needs to be done anymore for accuracy. I suppose those areas with 250 miles between CORS would still be valid, if there are any of those left (Alaska?). But 2 hours should suffice.?ÿ
I was convinced that I heard a presenter at the PLSO conference say that 2 hour sessions would be used, but not with the same weight as 4 hour.?ÿ
That is how I heard it, also. Perhaps he just misspoke. But more than likely the website needs updating.
4 hours is an old standard, the GPS world has moved on and it's not something that needs to be done anymore for accuracy. I suppose those areas with 250 miles between CORS would still be valid, if there are any of those left (Alaska?). But 2 hours should suffice.?ÿ
This is about data for NGS use, not for business use
@mightymoe Yes. Submit it.
@mightymoe 4 hr. is an old standard because it works; still does. The physical reasons haven't changed. Yes, with more powerful computers and sophisticated antenna designs the results for shorter times have improved significantly.
4 hours is at an inflection point of increases in predictable precision results. (2 hours was chosen in lieu of 4 hours for OPUS, back in the day, primarily to not discourage people from using it.) See: https://www.ngs.noaa.gov/OPUS/about.jsp?ÿ
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@bill93 the mark is located here. ?ÿNot showing up on the shared solutions application. ?ÿIt is a PACS airport BM.
On a secondary note, the mark is in danger of being destroyed by an airport improvement project. ?ÿThe local county surveyor office is reviewing the plans for the project??s impact on the nearby legal drain. ?ÿThey have asked me to comment on the destruction / reestablishment of the monument.
Your (everyone) thoughts / comments here too, please??ÿ
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