Nubby questions here. I am running the GNSS Dead Reckoning ZED-F9R Pi Hat.
Software: Have used the U-center v24.10 and the newer u-center 2. I have been using the manuals from U-center and what I can find on youtube. With v24.10 it seems if I select an item, there is some other dependency I am not aware of. As for the u-center 2, it seems like I am not getting the same level of options. What guides do you all recommend? Any courses on this?
I’ve used both but only for like 1 hour of testing/fooling around each…what specifically are you trying to set?
Thanks for the reply. Mostly trying to get smart on this unit and GPS/IMU. Any suggested text or videos would be awesome. A few things I was having a hard time with:
My other post hits on this, what is the best way to calibrate the unit? It looks like some unit a person needs to put into a calibration mode, and others do it automatically.
It looks like GNSS is the default. I couldn’t figure out how to just GPS vs all constellations (which it looks like it does if you select GNSS). I could click on GPS, but it reverts back to GNSS.
How accurate of a measurement should I get from the GPS unit? Is there a function to increase precision? I read online it looks like a person can enable filters, but I can’t find this function. I see where I can increase the number of samples per second of GPS messages it sends to my computer.
With v24.10 it looked like it showed some options, but they were bord specific. It wouldn’t say that it doesn’t work with this board or wasn’t gray out. Then some things you had to try to find out what dependencies also needed to be enabled.
At first my unit would not display IMU information XYZ, it took some time to figure out what all I needed to activate.
Like I said I am new to this. Searching this community, youtube, and manuals. Any suggested links would be great.
Well with an RTK solution, receiver being fed with RTCM3 data from an NTRIP or local base station via radio, a CEP of the order of 2 cm (or 1 cm + 1 mm/km). Unaided perhaps expect a couple of metres, depending on the efficacy of your antenna and it’s placement.
As for “precision”, the ability to report position, use UBX-NAV-HPPOSLLH for decimal degrees to 9dp, NAV-PVT is 7dp. For NMEA there’s a CFG-NMEA-HIGHPREC option to expand the digits for minutes, and altitude.
For Calibration / Sensor fusion, as I recall for automotive you probably want to drive figure 8 patterns, and get up to 30 km/h