Eye4Software Hydromagic

Hydrographic Survey Software

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Tide correction settings

The next step in the conversion process is to define how the sounding is corrected for tides.

If you do not want to use tide corrections, for instance when calculating volumes only,
you can skip this step by selecting the "Do not use tide corrections" and clicking the "Next" button to proceed to the next step.

Tide correction settings in the sounding wizard

Tide gauges

If a tide gauge receiver is used, you can select the "Use tide gauge measurements" option.
The software will use the tide observations stored in the raw data file.

Use MSL height from RTK receiver and ignore geoid model

Use this option only when a geoid model has been loaded in your RTK receiver.
The software will use this calculated height directly without further corrections (except for the antenna height offset).

Use tide correction file

When you want to use tide corrections without special hardware such as a RTK receiver or tide gauge, you should select this option.
It allows you to create a tide correction file where you can enter the tide observations made during the survey.

You can start the tide editor by clicking the "Editor..." button.
Once completed, save the tide file and select it using the "Browse..." button..

Tide file editor

The tide file editor can be used to alter previously saved tide files, or to create a new tide file.
To start the tide file editor, just click the "Editor..." button. The following window should appear:

Tide Correction Dialog

Use geoid model

When a RTK receiver in fixed mode is used, the height of the antenna is stored into the raw data file as ellipsoidal height.
By applying a geoid model and an antenna offset, you can calculate the exact tide level for each RTK position stored in the file.