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Leica - GPS (LGO) processing question

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Leica - GPS (LGO) processing question

Posted by Jonathan Schmidt on Nov 1, 2010 11:57 am

I am having trouble finding antenna calibration files for importation into LGO, can anyone help me out with this?
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Re: Leica - GPS (LGO) processing question

Posted by Loyal Olson on Nov 1, 2010 12:35 pm

Well, I don't use LGO, so I don't know what kind of file format it's going to want to see.

You can get to the NGS Antenna Calibration Page here:

http://www.ngs.noaa.gov/ANTCAL/

The above site will get you either individual antennas, or complete ASCII files for both NGS "Relative" or "Absolute" calibrations data.

The latest (I think) IGS Absolute Calibration data can be found here:

ftp://ftp.ngs.noaa.gov/pub/pnt6/igs05_1604.atx

If LGO will accept ASCII files (most programs do), then at worst you will have to [maybe] cut out the antennas that you are interested in, and re-format the data somewhat.

Absolute Calibrations have REPLACED Relative Calibrations some time ago (about 4 years), but many programs are still running some form of Relative Calibrations (NGS or vendor specific). As we move over to ITRF-2008 this winter, we should all get on the same page with the Absolute Calibrations.

Loyal

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Re: Leica - GPS (LGO) processing question

Posted by Jonathan Schmidt on Nov 1, 2010 1:24 pm

And that is the file I have been trying to locate, thank you very much.

Out of curiosity, how did you find it in the first place?
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  • Joined: 04/06/10

Jonathan...

Posted by Loyal Olson on Nov 1, 2010 1:33 pm

Which one?

:)
Loyal
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