I just recently installed a mosaic-x5 kit here at my home, as I’m wanting to do some experimenting with RTK. I have the antenna mounted to an exterior structure with a reasonable view of the sky.
I’ve had the mosaic-x5 online for over 24 hours, and even after postprocessing the rinex data and putting the cartesian coordinates into the advanced settings, I’m reading a HDOP of 0.6 and a VDOP of 1.08 even with 41 satellites in view.
Is this normal? Doesn’t this equate to the unit being unsure of its position by +/- 50 feet?! I thought these things, once statically mounted, would have sub-meter accuracy even without rtk corrections.
I’m a newbie on this so I may be missing something – I know only about consumer GPS and this is my first foray into “serious business” position detection.
Thanks in advance for any info you folks can provide!
DOP values describe the current strength of the satellite geometry, and they are constantly changing as the satellites fly around overhead.
Ah, ok – I was misinformed – I was under the impression that DOP directly related to positional error.
Do you know if there’s any way I can validate that my NTRIP caster is sending OK data? I don’t want to pollute the system with inaccuracies if there’s something amiss. Or maybe my question should be: does positional accuracy of the station affect the NTRIP network, or is it just good to have a very accurate position so that the reference corrections are as accurate as possible?
There’s a lot of data in the mosaic-x5 screen talking about the health of things, but I’m not sure which ones are the right ones to look at and go “yup, we’re all good.” Is the “Overall Quality” score most relevant? During the daytime my signal is 9/10 but at night it goes to 10/10, so I assume that’s pretty good.