I am using trimble equipment. I started my base using "here" and then did a site calibration with a rover and a know control point. If I want to add a second rover what do I need to do on the second rover to make it use this calibration? I don't think I want to repeat the calibration with the second rover rather I would like to copy it over someway just not sure how.
I'm going to simplify this mainly because I'm not sure how to explain it any other way.
Coordinates of Base point with here shot = N:5,000 & E:5,000
Reported Coordinates of BM = N:10,000 & E:10,000
Coordinates of shot taken on BM = N:10,002 & E:10,012
You calibrate the shot taken on BM to the reported coordinates of BM. At this point the coordinates of your base point should have shifted to N:4,998 & E:4,988.
If you fire up another rover at this point it should recognize the base coordinates as
N:4,998 & E:4,988 and no further calibration should be needed.
This assumes that you only calibrated horizontally to one point.
I don't think it works that way. In your flow, you haven't communicated to the base any new position, it's still pumping out corrections for 5000,5000. The rover is applying the shift, most likely in the collector where the localization, or calibration, is stored.
> I don't think it works that way. In your flow, you haven't communicated to the base any new position, it's still pumping out corrections for 5000,5000. The rover is applying the shift, most likely in the collector where the localization, or calibration, is stored.
Would a restart of the base with the corrected coordinates work? By the way I don't work with multiple rovers often. When I have, it has been with multiple crews, and each crew calibrates each rover.
> Would a restart of the base with the corrected coordinates work? By the way I don't work with multiple rovers often. When I have, it has been with multiple crews, and each crew calibrates each rover.
yes, that should work. The user that established the localization/calibration would need to turn the localization/calibration off after resetting the base, otherwise that rover would continue to correct an already corrected position.
> I don't think it works that way. In your flow, you haven't communicated to the base any new position, it's still pumping out corrections for 5000,5000. The rover is applying the shift, most likely in the collector where the localization, or calibration, is stored.
I agree. The base has no way to know you did a calibration. I don't think you want change the coordinates for the base either because then the rover you did the calibration with would be doing the shift twice.
Once you've used a Here position as the basis for a site calibration that Here position IS your control for the job, so whatever you do don't change that. The base transmits the Cartesian coordinates at the phase center, it doesn't know or care about coordinates or sites.
The easiest thing to do - assuming that both data collectors are running the EXACT same version of Trimble Access - is probably to just copy the job containing the original calibration to the other data collector. Barring that, just bring in all the grid and ground coordinates that are the basis for the calibration to the second collector and redo it.
There's a way to do it through TBC as well but it's more of a pain than it's worth.
I just did this the other day.
On your second rover devise, start a new job and just key in the parameters of the Horizontal Adjustment and Vertical adjustment from the devise ( TSC3, TSCII ) you established the calibration with. In other words you can manually copy the calibration parameters to another devise.
I set up a TSCII this way with the Calibration done on a TSC3, checked some points and it worked like a charm.
LOL - Thanks, I overlooked the obvious response and dove right into the harder ones.
I started my base using "here" and then did a site calibration with a rover and a know control point. If I want to add a second rover what do I need to do on the second rover to make it use this calibration?
What are you calibrating too? One point? That really isn't a calibration. Not sure why you would do that. A calibration should be done between established control points. If you are worried about elevations you need a number of them. And a small area, otherwise it can get messy in a hurry.
Much better to do a projection before you leave the office with a GEOID model applied and if you want to adjust to ONE elevation control point then locate it and retype in the elevation at the base so it matches. The "calibration" is taking place in the data collector and each data collector better have the same projection or "calibration" in it or you can have a nightmare. Better to do that before leaving the office. And really except for "OLD" control that "HAS" to be held and wasn't done with GPS there should never be a need to calibrate.
Can't you just blutooth the calibration and control from one device to another?
I only have one so I don't know for sure.