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Coordinate Systems: Spectra Precision Ranger 3 and Civil 3D
Good Day,
Not sure if this is the right forum for this question, but if not just let me know and I’ll move it. I’m also asking something specifically related to Canada, so I’m maybe reaching here. My site is in Edmonton, Alberta.
Our office uses a Spectra Precision Ranger 3 with a SP80 rover and base station for surveying. We are not surveyors. It was bought for the office, set up for us, and we were told to use it, so no background at all in this type of surveying. It is used mainly for completing surveys of our project’s site. We survey, download the csv file and our drafts person complete the drawing.
The last couple of surveys I’ve done, when the points have been brought into Civil 3D 2021, they appear rotated two to three degrees as to how they should appear in the real world. That is, the roadway adjacent to my site is basically east-west, but to make the points line up I would have to rotate the points almost 3 degrees. There is a coordinate system in the Ranger and one is used in Civil 3D, but I’m wondering if someone has changed settings in the Ranger. No one admits anything but thought I would post to see if I could get some guidance. And, we have no training in coordinate systems. I should also mention that when we survey in urban areas we connect to a service call Can-Net (https://www.can-net.ca/) which provides real time post processing to a GNSS network across Canada. Thus, when we connect to Can-Net we just use the rover and no base station. I’ve also called the company where we purchased the survey equipment from and they were basically no help, even their technical support line.
I’ve attached a picture of the coordinate system we use in the Ranger when setting up new jobs. I’ve also attached a survey plan of the site and surrounding area. My site is the one with the red circle around the number 12. The site does have a very slight offset from 90 degrees but nothing like our data gives us. Lastly, a screenshot of how the site ends up being orientated in the Civil 3D drawing based on the survey data. I was wondering if anyone could let me know if the coordinate systems are the same between the Ranger and Civil 3D, and if not, what should the one in Civil 3D be changed to?
Thank you for all of the help.
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