Can anybody explain how the site localization works in Smartworx? I am getting thrown off by the whole 2 jobs thing. I understand that one is a standard coordinate reference frame, and the other is the local site, which probably contains a translation and rotation and height adjustment from said reference frame. I just don't see the need for two separate jobs.
Anyway, if somebody could explain in a few steps how to do it, it would be a big help. I am having issues with a contractor using machine control on a site I have recently taken over. I have to go out there on Monday to try figure out where the discrepancies are. I'm not saying I am going to localize to his coordinate system, but its possible that may end up being the best solution at this point since some improvements are already in.
Thanks.
Probably someone else knows the software better than I do in this regard, but from my understanding it is because each job can only have one coordinate system and in order to allow a transformation between different coordinate systems two separate jobs are required. In the case where the local points are not in any geodetic coordinate system I agree it should not be necessary but I don't exactly know what is all possible with the way it is set up.
What about simply doing a one point localization, then measuring a few control points in the working job and numbering/naming them something else than the fixed points, and then follow with a match points scale/rotate/shift? I find this to be a quick and dirty way to get going, just remember to fix your scale and the residuals will immediately let you know how good the fit is. This is not the ideal solution for all situations but it has its place, and requires only the one working job.
Thanks. I may try that solution.
This whole thing is kind of annoying. I'm pretty sure this guy has a horizontal bust. When I first went out to this job I made multiple GPS observations of the previous surveyor's biundary and traverse control all around the site on all sides with the worst error being about 0.10' horizontal and even less vertically. Job was supposed to be in state plane, and based on those checks I'd say it is. Now a non-surveyor with a GPS is telling me everything is missing by 0.3'. I agree, but I'd say its his stuff that's off.
Dan,
You do not need two separate jobs to do a Leica One-Step local coordinate system. I know the interface seems to lead that you need two jobs but you can have your user-entered coordinate from the previous survey and your RTK positions stored in the same job. You can also have the points both inputted from previous survey and RTK measured positions with the same name. Naming the same helps use the Auto-match feature once you do your calculations.
I would never, never, never do a One Point localization with any system unless I was doing something I wanted to do in my assumed coordinate system and the site might be a few acres and I had a check point I established to be able to check the vertical every day. One point localizations do not work over anything over say 1 or 2 km areas. These are lie putting a gun to your head and pulling the trigger.
Remember that Leica keeps the WGS84 positions as the base coordinates for all GNSS measurements. So you can always change coordinate systems but you are place in the real world according to the accuracy of the coordinates transmitted from your base. The Leica One-Step s good for about a 10 km by 10 km work area. You can have points that are used in the calculation with XYZ, just XY, or just Z values. When you are calculating you can choose how a point is to be used. After you preliminary calculation you can even review the results and make choices as to how well values fit and change how you will use a particular point. The Leica One-Step handles the horizontal projection and the vertical reference plane separately. The method that is used is that the system uses a local Transverse Mercator projection that is scaled to the ground values for horizontal. The system will develop a titled ellipsoid if you use 3 or more points with vertical values for the elevation reference.
I think if you saw a step-by-step example you would be able to use te One-Step coordinate system easily. If you can email me I can send you a walkthrough and answer any questions you have.
