Triton TritonNav Bedienungsanleitung PDF herunterladen (Seite 33)

2004.06.28 CHAPTER 1: Using DelphNav™ (Survey Control Panel) 27

Using Delph Nav Making or Using a Survey Plan

Creating a Channel

The purpose behind creating a channel is to provide a reference surface to which a

DTM of the seafloor can be compared. This tool also sets up survey lines along which the

vessel can be navigated to acquire profile data across the designed channel.

A channel-design file contains two basic sets of line objects: length-wise borders (one for

each “side” of the channel) and a series of transverse lines (cross sections). These line

objects may be added to the DelphNav window by drawing them as lines, by inserting

coordinates manually in a spreadsheet, or by importing an ASCII file of coordinates. The

channel-design tool will lead you through this process as follows:

To create a channel design

1. Click the Create a channel button (icon shown to the right).

The system displays the Channel design procedure dialog box (Figure 15),

where you can import an existing channel or create a new one. The Chan-

nel design procedure dialog box first asks you to Create border line No 1

(either draw the line, insert manually, or import from an ASCII file). After you create

the first border, the system shows Create border line No 2 in blue text, and Create

border line No 1 displays in black text. Specify the second channel border at this

stage.

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Triton TritonNav Bedienungsanleitung Seite 33