Kongsberg Simrad ST90, Reference Manual

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Tracking Area function
Use the
Tracking Area
function to define the size of the area that you want to detect moving
objects in. An invisible area - the tracking area - is created as an acquisition area. In order
for the ST90 system to find and lock on the intended target, it needs to be kept within this
tracking area. If the intended target falls outside the area, the tracking can not be started.
How to open
This function is opened from the
Setup
menu.
Illustration:
A
Each
Tracking Area
option controls the distance from
the inner to the outer radius of the area.
B
The width of the area is fixed, and stretches across
a predefined number of beams. This means that the
actual width depends on the distance from your vessel
to the area.
Description
The
Tracking Area
function is used to select the physical
size of the area. You can choose from a set of predefined
sizes.
Note
To track a target efficiently, the area should be as small
as possible. For example, use a small area if you track
single fish or small schools. However, if the target is large,
or moves very fast, a larger area may be beneficial. This
may be useful if you track a large school of fish.
Use the
Tracking Area Setup
dialog box to change the size
of the predefined area sizes. You can only define the area size as the distance from the
inner to the outer radius of the area. The width of the area is fixed, and stretches across a
predefined number of beams.
Once you have initiated target tracking, the tracked object is identified with a marker. The
bearing line turns to place itself on top of the tracked target.
Functions and dialog boxes