DPOS Output Units

Jim Frame

Well-Known Member
DPOS developers: I just ran a file through DPOS to compare the position with a CRTN position, since the RTN shot was kind of challenging. In order to do an apples-to-apples comparison, I needed to look at the position of the DPOS source point that I had used for the RTN mountpoint. I noticed that the DPOS report shows the ellipsoid height as being in meters, but it appears to be in feet, which is the unit setting I used in my RTN project.

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Alexey Razumovsky

Well-Known Member
Staff member
5PLS
DPOS developers: I just ran a file through DPOS to compare the position with a CRTN position, since the RTN shot was kind of challenging. In order to do an apples-to-apples comparison, I needed to look at the position of the DPOS source point that I had used for the RTN mountpoint. I noticed that the DPOS report shows the ellipsoid height as being in meters, but it appears to be in feet, which is the unit setting I used in my RTN project.

View attachment 9644
Jim, you highlighted a header of Solution report. Solution statistics are in WGS-84.
It's a metric coordinate system. Suspicious place for feets here.
The text above Solution reports is very similar to OPUS one.
BTW it is not a big deal to convert metric units to survey feet, isn't it?
 

Alexey Razumovsky

Well-Known Member
Staff member
5PLS
I expect shown ellipsoid height number being in meters. If not and this number is in feet then it is error. I will recheck this. Solution report should be in metric. Post processing is running in ECEF WGS84. The results and statistics are in meters as well. An adjustment with reference points deals the coordinates tied to reference points coordinate system. Said that we might show coordinates in feet in adjustment report. In the meantime DPOS report designed like OPUS one. They does not show reference points coordinates in feet anywhere. :rolleyes:
 

Jim Frame

Well-Known Member
I'm comparing the DPOS report to the datasheet for P268, which shows the EH as -23.xx meters (I don't recall the exact number), which is 70-some feet
 
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