Notifications
Clear all

TBC Combining S6, R8, and Dini measurements

6 Posts
4 Users
0 Reactions
3 Views
(@jeff-wright)
Posts: 80
Registered
Topic starter
 

Hi,

I'm a new TBC user and I'm trying to figure out how to best integrate data from GPS (RTN), total station, and a digital level.

My workflow so far is as follows:

1) Used RTN to calibrate to existing control and then set project control.
[INDENT]a)Imported the .job file from the data collector into TBC project[/INDENT]

2)Used a digital level to run a level loop through all project control.
[INDENT]a)Imported the .dat file from the level into TBC project

[INDENT][/INDENT][/INDENT]
3)Set up on the project control with S6 and performed topo while simultaneously traversing through project control points.
[INDENT]a)Imported the .job file into TBC project

[/INDENT]
Each project control point was given an identical number when measured via GPS, S6 traverse, and level.
When all of the data is brought together in TBC and I look at the "point derivation report" for a project control point, it shows that the level data is controlling the elevations (perfect) and the GPS data is controlling the northings and eastings. My traverse data is shown as enabled, but isn't contributing to the final point coordinates.


Without using starnet, is there a way to use the S6 measured data to improve on the RTK positions?

Thanks!
Jeff

 
Posted : 20/04/2017 12:03 pm
(@emetz)
Posts: 19
Registered
 

Jeff,

It may be due to the point hierarchies that TBC uses. (Ex. Control, Survey, Mapping, Unknown). Try adjusting the GPS data to a lower hierarchy than the S6 data to see if that fixes the issue but I don't use TBC for much besides post-processing GPS data so I might not even really know what I'm talking about.

 
Posted : 20/04/2017 12:16 pm
(@kabonski)
Posts: 58
Registered
 

It's been a while but I think you need to run a network adjustment in TBC since you have a closed traverse. You should be able to define what control to hold both vertically and horizontally.

Sent from my iPhone using Tapatalk

 
Posted : 20/04/2017 12:24 pm
(@lee-d)
Posts: 2382
Registered
 

If you just want the S6 data to be used as part of the computations but don't necessarily want / need to run an adjustment just go to Project Settings, Computations, and change it to Weighted Mean of All Observations (see photo).

Attached files

 
Posted : 20/04/2017 1:46 pm
(@lee-d)
Posts: 2382
Registered
 

By the way, when you have it set to single observation the hierarchy is basically whichever one you imported first; as far as their point class they're all Survey Quality.

 
Posted : 20/04/2017 1:48 pm
(@jeff-wright)
Posts: 80
Registered
Topic starter
 

Thanks for the replies. I'll try those suggestions when I get back to the office on Monday.

 
Posted : 22/04/2017 3:38 pm