Triton TritonNav Manual de usuario descargar pdf (Pagina 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:

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 83 84

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Triton TritonNav Manual de usuario Pagina 61