Current
A current sensor can be connected to the ST90 system. This can for example be an acoustic Doppler current profiler (ADCP). You can read the numerical value of the water current's velocity (the vector information) in the view's bottom right corner.
Target Track
Select Target Track to present relevant information about a tracked target or priority object. You can see this information in the bottom left corner of the view. The bearing and range values are relative to your vessel.
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Bearing (The value relates to the ship's heading.) |
A target track permits the ST90 system to automatically control the tilt and bearing based on the movements of the chosen target. It locks on the target defined by its position, heading and speed. The bearing and tilt settings are automatically adjusted to follow the movements of the tracked target. The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area. By default, a new manually initiated tracked object is automatically given priority status. The bearing line is automatically locked on the object to reflects its bearing.
Target Volume
Select Target Volume to present calculated area and volume of a tracked target or priority object. You can see this information in the bottom left corner of the view.
Bearing / Distance / Depth
The position (bearing and distance) and depth of the cursor's location is shown in the lower right corner of the view. The depth is calculated from the current tilt and the distance from the vessel.
Manual Track
You can start manual tracking by placing multiple markers on a target echo that moves in the view. One or more markers can be placed in the view to identify specific echoes.Each marker is shown as a small triangle with or without a short identifying label. You can see the latest marker's course and speed in the view's lower right corner. The values are calculated based on the last two markers you created and the time between them.
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Place the cursor on the object you wish to be marked. |
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Right-click and select Place Marker on the shortcut menu. |
The Track Course, Track Speed, and Track Distance values offered now relate to the previous marker you created. The physical location of the individual markers and the specific information provided for the latest marker show you the historical
path of the chosen target.
TipOnce an echo has been provided with a marker in the display presentation it is regarded as an object. The Objects menu provides a list of all current objects. This includes all types of objects including those classified as targets.
GPS (Global Positioning System)
Select GPS to see the cursor's geographic position.