Hi,
A couple of questions for the pro's:
We are testing Viva GNSS receivers in post-processing kinematic mode, running into non-satisfactory results due to probably lack of experience and proper procedures.
At the rover, in the settings, what is the difference between logging "static and kinematic" raw data as opposed to logging "kinematic" only raw data?
Could the engine In LGO post-processing the data in a different way? Using option 2, "kinematic", the result that we are seeing show statistics getting better from power on to power off, a linear rate of change.
I was under the impression that forward / backward (15 min static baseline at start / 15 min static baseline at end) processing would yield results with similar accuracy from start to end of the moving observations.
Maybe some processing parameters need to be adjusted in LGO, not much information found so far.
Thanks,
James,
PPK is a finicky process. It works great in wide open areas but is almost worthless any where else. I used to use it a lot on the ground prior to RTK but it was a real nail bitter. Now I use it in airborne GNSS/IMU processing.
The first thing you need to do is make sure the receive is collecting both static and kinematic data. Static refers to any time you hit the occupy button and kinematic is when you are moving. You need all of the data so make sure the data collector is set to collect both.
The bare bones of data collection requires about 15 minutes of data to get an initialization. In theory you can begin to take shots as soon as you start the session. In practice you want to have the initialization time in the bank so when you loss lock you have it covered. If you don't have enough time to initialize then you get nothing. Any loss of lock will require a you to reinitialize so you want to have 15 minutes. The initialization does not have to be static.
I'm not sure how well LGO works on PPK since I utilize specialized software for airborne.
Good luck, if you don't live in the great plains you will need it.