Triton Isis Bedienungsanleitung PDF herunterladen (Seite 113)

June 2004 Isis® Sonar User's Manual, Volume1

6.5 Ocean Tide (Record/Playback)

With the Ocean Tide command, you can specify a tide level above or below

mean low-low tide. From Record Mode, a non-zero value entered here will be

stored in the data file. If the value is set at zero, Isis will store tide as it is

acquired over the serial port. Refer to

Appendix D, ‘Serial Interfaces’ for

guidance in the configuration of serial interfaces. In Playback Mode, a non-zero

value will override the stored tide for display purposes.

Figure 6-6: Ocean Tide dialog box

If the Apply Tide Correction box is checked, Isis will apply a correction based

on the tide value to any depth-corrected subbottom display. Refer to

‘Depth

Delay and Duration’

for guidance in displaying depth-corrected subbottom data.

6.6 Sound Velocity (Record/Playback)

Because the speed of sound varies with water temperature, depth, and salinity,

you may want to specify a value that most closes matches the conditions you will

encounter during your data survey. The

Sound Velocity command (Figure 6-7)

allows you to specify the speed of sound in water based on two-way travel time

and one-way distance. The default is 1500 m/sec. Isis uses whatever value you

specify here as the speed of sound for all distance calculations.

Chapter 6: Using the Configure Menu

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Triton Isis Bedienungsanleitung Seite 113