System description
5
850--164186 A
In the 180_ /Vertical and Omni/Vertical modes, a trainable 180_
vertical slice is presented.
→ Refer to section; ”Modes of operation” on page 10.
Optional triple-- or multiple--frequency
In addition to the standard 26kHz frequency, options are
available for triple and multiple frequencies. In the
triple-frequency version, the operator can select between 24 kHz,
26 kHz and 2 8kHz, and in the multiple- frequency version he can
select between 22 kHz, 23 kHz, 24 kHz, 25 kHz, 26 kHz, 27 kHz,
28 kHz, 29 kHz and 30 kHz. These selections are specially useful
to suppress interference from other sonars.
Optional stabilization system
Figure 2 - Optional stabilisation system
When the optional beam stabilizer is activated, both horizontal
and vertical beams will be stabilized electronically for roll and
pitch movements up to ±20°. The beam direction will then change
continuously according to the vessel’s movements, and secure an
optimal contact with the targets even in rough seas.
1.4 Functional description
Introduction
The basic principles of the SP70 sonar are unique because of the
240 separate transmitter and receiver channels with their
transducer elements spread around on the spherical transducer
array. The transmission, reception and data processing are under
computer control, and the powerful capabilities of the sonar are
results of sophisticated digital signal processing software and
state of the art hardware.
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