Kongsberg Simrad SU90 Operator's Manual page 16

Simrad SU90 Operator Manual
The narrow beam opening angle (4.9° @ 30 kHz) and
the increased source level (3 dB) makes the SU90 a very
powerful and high resolution low frequency sonar. The
narrow beams provided by the SU90 system give you several
advantages.
• They increase the range and resolution, and offer a vertical
view with additional details and a clearer picture.
• They make the SU90 system even more ideal when you
need to search for fish close to the sea bottom, or close
to the surface, at long ranges.
• They provide a far better vertical view with less "bottom
climbing" that what is seen on sonars with a wider beam.
• The narrow beams also decrease the noise level.
The SU90 system offers the same user interface and
operating software as our other sonars, echo sounders and
catch monitoring systems. This enables easier and faster training of new users.
• The echo presentations are optimised for multiple displays. Provided that you have
connected additional displays to your Processor Unit, you can use the
function to take any sonar view and place it on a separate display. When you move a
view to another display, it will automatically be scaled for the best possible result.
• It is common for sonars to require many pings to build the various views in the echo
presentation. On the SU90, all the sonar views in the presentation are built using
the echoes from one single ping. This dramatically improves the update rate and
provides better real-time information.
• The SU90 system permits you to record real-time sonar situations. Previously, only
screen captures were recorded. You can now record the real echoes during the normal
sonar operation. This allows you to replay complete sequences. The playback
contains the exact same echo information, and can be used for mission history,
training or troubleshooting purposes.
• The tracking function has been improved. It can now use echo information from both
the horizontal and vertical transmissions.
Great emphasis has been placed on an intuitive user interface and the best possible sonar
presentations on a high resolution colour display.
The SU90 system is equipped with the celebrated signal processing software developed
by Kongsberg Maritime. This includes Hyperbolic FM (HFM) transmissions. This pulse
type is also known as "chirp". It ensures a clutter free picture with very high resolution
in range. The signal processing and beamforming is performed in a fast digital signal
processing system using the full dynamic range of the signals.
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Docking Views
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