Triton TritonNav User Manual
Page 61
2004.06.28
CHAPTER 1: Using DelphNav™ (Survey Control Panel)
55
Using Delph Nav
An Example of Survey Planning in DelphNav
Now we need to setup the output (or working) projection for the project. Recall that we
want to use a GPS receiver having a data output in Lat/Long based on WGS84, and
that the project is required to be in the UTM projection.
8.
In the Projection Settings dialog box, click
Change
next to Output Projection; select
Universal Transverse Mercator
from the list, and click
Next
.
9.
Check that the displayed Zone and Hemisphere are correct for Portland, Maine (it
should say
Northern hemisphere
and a longitude of approximately 70 degrees west,
which corresponds to
Zone 19
in the Select UTM Zone and Hemisphere dialog of the
Output Projection settings box);
10.
Select
Zone 19
in the dialog box, then click
Next
.
The system displays the Select Datum dialog of the Output Projection settings box.
11.
Select the datum for the output projection:
WGS Datum (1984)
; then click
Finish
.
Note:
Observe that we were not obliged to use the North American Datum (1927) as
output, even though that datum was used as input. This demonstrates the pro-
gram’s flexibility in allowing the operator to adapt the data to new needs.
After a short pause the Projection Settings box re-appears with the output projection
information now added to it. Figure 33 shows the data: