If anyone has the time to look at this case I would be very grateful.
I was conducting a survey in the back and beyond, plenty of clear sky view. It was a hydrographic survey so the receiver was mounted on a moving vessel. The base, firmly secured on top of a building on land – clear sky view. I’m running a pair of Reach RS units - should be all up to date.
I have tried post processing so many times with a plethora of settings in RTKPOST. I get fixes >95% in most scenarios but the vertical positions just do not add up to what happened in reality – that is the attitude of the boat. The vertical positions I get vary by a meter or more, (squat on the boat would not be this much) around an order of magnitude greater than what would be expected. Change in vertical positions over the course of the survey seem coincident with the heading of the vessel, so we kind of end up with these parabolic curves in vertical position for each transect………………honestly I am out of ideas.
The boat was moving a lot – it was a choppy day, and the survey pole mounted on the vessel had a bit of wobble. I have increased the Max Accel values for these reasons but it hasn’t helped. I also spent a bit of time creating of list of sats to exclude………mixed results but none of them useful so far!
I have taken the liberty of providing a link to the obs/nav files I have stored on Dropbox. There is a text file with the base location as well. https://www.dropbox.com/s/915t7b8r5fvy4v3/vietcase.zip?dl=0
If you are inclined to have a look that would be great; I’m just hoping there is something simple I am missing.