Spectra-precision Survey Pro v4.5 Recon and Nomad User Manual Instrukcja Użytkownika Strona 239

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GPS Overview
229
In Canada you can use the Geodetic Survey Division HT 2.0
model, or the older GSD95, HT1_01, and HT97 models.
For any location world wide, you can use the NIMA 15-minute
geoid height grid data file, WW15mGH.*. This file covers the
entire globe on a 15’ x 15’ grid.
In Australia you can use the AUSGEOID98 geoid model.
Note: To use any of these geoids with Survey Pro, you need files in
Trimble .ggf format. For the US, Canadian, and EGM geoid models,
you can convert the files from their original format into .ggf format
using the Geoid File Convert and Sub Grid function in ForeSight
DXM. The Australian AUSGEOID98 model is not supported in this
function, so this data is available in six overlapping sub grid files
already in .ggf format. All of the source files are included on the TDS
Works CD in the \Geodata directory. Also, you can download data
from the TDS Web site on the GPS page.
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