442704/A
633
Acoustic noise
Topics
Introduction to the acoustic noise challenge, page 633
Contributing factors, page 633
Electrical self noise, page 638
Some means to reduce acoustic noise, page 640
Introduction to the acoustic noise challenge
Even with the advanced noise filtering offered by the sonar system, we must address the
noise challenge. This is important during the planning and preparations for the system
installation. The echoes from any large and small target must be detected inside the noise.
It is important that we keep the noise level as low as possible. This is necessary to obtain
long range and dependable interpretations of the echoes.
Related topics
Improving the recognition of fish and schools using receiver filters, page 117
Concept descriptions, page 626
Acoustic noise, page 633
Contributing factors
Several factors are contributing to the performance of the hydroacoustic equipment used
on board a vessel.
Factors contributing to the performance of the hydroacoustic equipment used on board a
vessel are:
• The quality and properties of the transmitted signal
• The quality of the receiving system
• The operational settings made during operation
Summary of Contents for Simrad ST90
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Page 413: ...442704 A 411 Related topics Menu system page 375 Display menu page 384 Menu system ...
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