Okay.
I always adjust GNSS and total station simultaneously.
How OSTN02 works
OSTN02 consists of two grids of shift parameters, one for eastings and one for northings. Each of these grids has a resolution of 1 km and covers an area of 1250 km by 700 km. At each intersection of these grids a shift (northing and easting) is given. [hl]Therefore the complete transformation consists of just under two million parameters.[/hl] The transformation at a particular point is interpolated from the shifts given for the corners of the grid cell within which the point falls.
That's the one, never though of there being so many million numbers in it. The trimble SGF file is 13.4 MB for example.
We have a small subset of the shift grid that is only 1.45 kB
Dave Karoly, post: 337959, member: 94 wrote: Okay.
I always adjust GNSS and total station simultaneously.
What's your workflow ie which program do you use for GPS processing and how do you get the info into Starnet?
likewise the TS data?
I use TBC for static processing. I would also consider using RTK vectors from Trimble Access, not sure how I would bring these in.
I have a custom stylesheet in Access for producing Starnet DAT files from TS data as I was unhappy with the conversion tools of Starnet and also the stylesheet provided on the Trimble website.
I still think it is likely that StarNet could output your final file through the use of the Ground Scale Coordinate file. StarNet will apply a scale, a rotation, and/or to translation to your adjusted results, if desired.
Over the years I have used Leica Ski & Ski Pro, LGO, TGO, TBC, and SPSO to resolve static vectors. All of these could export vectors to a format StarNet could import. These days I am incorporating RTK vecors in adjustments more often than static. These are imported to StarNet using converters that are built in.
For total station data I convert to StarNet using on e of StarNet available converters. These days I'm using StarTDS to convert Spectra Precision Survey Pro raw files. In the past I've used StarTSC to convert Access .dc files to StarNet.
I process GNSS baselines in TBC. Then I export a TDEF file with the post processed vectors in it. If I followed a TBC friendly workflow then I process everything in TBC (essentially first setup on a GNSS point back sighting another GNSS point).
If I'm processing in StarNet then I take the RW5 file I always create on the TSC2 and use the StarNet TDS converter to make the DAT file. StarNet has a GPS import routine under the input menu.
Most of my Surveys are fairly small so I usually hold one OPUS solution fixed and use the others as a check. The GNSS vectors control direction.
