Spectra-precision FAST Survey Reference Manual Manual do Utilizador descarregar pdf (Página 90)

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From Known Position Options



Previously Surveyed Point:

This requires you to enter the coordinates, on the configured coordinate system, of a

known, surveyed point. This will transform and localize to the local coordinate system, and optionally can be

followed by rover-based localization. The known point must be found in the RW5 file in a form that includes its

Lat/Long (a previous GPS measurement). This Lat/Long, just as with New Position options, is used to establish the

base position. This method requires that you are working within an existing job that has a raw file including

Lat/Long positions for the points being used. This next figure is an example of the prompting.

Like the other options, this continues on by showing the corresponding Lat/Long for the coordinate and allowing

the user to save the result in a reference file.



Use Local Coordinates:

If you have “localized” using option 5 (Localization) within the Equip menu, you obtain a

“dat” file. This localization file is used to convert any Lat/Long reading into a local coordinate. By the same token,

you can take a local coordinate, run it back through the dat file and obtain a Lat/Long for the base receiver setup.

That is the procedure used in this option.

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