"Were there any recommendations when doing rtk with the GVS files in doing this."
I don't recall whether or not antenna orientation is explicitly mentioned anywhere in the draft NGS 92 documents, but correct orientation is fundamental to the process so I can't imagine not adhering to it.
And related to what some have mentioned earlier about occupation time, here's a quote from one of the Trimble documents that were linked above:
"For establishing survey control points, Trimble still recommends that the user occupy each point for 3 minutes, and then again for another 3 minutes at least 2 hours later with a significantly different satellite constellation." I assume that NGS testing indicated that a longer occupation time was warranted for projects to be included in the IDB, thus the 5-minute spec.
"I know for static it is highly recommended to orient the antenna correctly as opus projects and opus now use the absolute antenna calibration files. Were there any recommendations when doing rtk with the GVS files in doing this."
I don't recall if there's any mention of antenna orientation in the draft NGS 92 documents, but correct orientation is just good field procedure so there's no excuse for not doing it.
And with regard to what some expressed earlier about occupation time, I note that one of the Trimble documents linked above states:
"For establishing survey control points, Trimble still recommends that the user occupy each point for 3 minutes, and then again for another 3 minutes at least 2 hours later with a significantly different satellite constellation." I expect that the NGS testing indicated that a longer observation period was warranted for marks to be incorporated into the IDB.
I might respond on to that, but use paragraphs because that is unreadable.
That’s probably the case. Remember, NGS only uses US satellites so they aren’t dealing with the real world now. I saw a recent surveyor article or post from an instructor who said he doesn’t use a RTK initialization unless it’s been fixed for 15-20 MINUTES! People living in 1998 aren’t working with all 4 constellations and Galileo and Beidou have changed the RTK game!
NGS has some really good presentations on the proposed NGS NOS 92 standards.
I saw a recent surveyor article or post from an instructor who said he doesn’t use a RTK initialization unless it’s been fixed for 15-20 MINUTES!
That's pretty funny...It takes less time than that to converge for a PPK solution...if we followed that protocol we'd never get any work done.
Remember, NGS only uses US satellites so they aren’t dealing with the real world now.
There's already multi-GNSS support for certain beta products, and the new standards and specifications are being written with it in mind.
"There’s already multi-GNSS support for certain beta products"
GVX support is no longer in beta, it's in production in OPUS Projects. And it's inherently multi-constellation, because GVX files don't contain raw RTK data, they contain vector data determined by the user's equipment. Multi-constellation for OPUS-S is still on the horizon, though.
Static with or without extra GNSS constellations won’t differ much, while RTK with Galileo and Beidou with 15 second observations are very good unlike 15 seconds with only US satellites
The ne constellations have helped tremendously in the RTK and PPP environment. Solving for time has improved tremendously with more for sure.
Now I would say not to become complacent either. Unless something has changed GPS or shall we say the good ole USA system only is still the only constellation that is monitored 24/7 360 period. The new signals coming from GPS satellites help way more than you could imagine with the backbone of GNSS. Those founders many many years ago that developed the system truly put there heart and sole blood sweat and all they had into development of what has matured into what we have today. The constant striving of those who work behind the scenes to improve and to push the URE to its limits unimaginable unless you have been in that world. Some of the brightness and hard working folks you have ever met. To this day those that enter into it truly are dipped into constant driving of making it better.