IMPACT SUBSEA
INNOVATIVE UNDERWATER PRODUCTS
www.impactsubsea.com
Document No:
0000.1991 |
Version No:
1.6 | 6
th
October 2020
11
3.2 Installation Location
When evaluating the installation location of the ISS360 sonar, there are several factors to consider
to achieve optimum performance:
•
Acoustics (For Imaging)
•
Magnetic Disturbers (For Heading)
•
Alignment with Vehicle (For Pitch/Roll)
3.2.1 Acoustics (Image Performance)
Of primary importance is the location of the sonar to achieve good imagery. The boot end
of the sonar (
see diagram in section 2.1
) requires to have a full 360° field of vision.
The boot end of the sonar contains a single transducer mounted to a stepper motor. This
transducer rotates through a 360° rotation in order to provide a 360° image of the sonar’s
surroundings.
When operating with a central frequency of 700kHz, the sonar has a 23° horizontal beam.
It is therefore important to ensure that no part of the sonar mount/vehicle passes within
this 23° beam. If it does, the part will be shown on the sonar image and may reduce range
performance.
Ideally the ISS360 should not be operated in close proximity to other acoustic equipment
with the same operational frequency (650 to 750kHz). Other acoustic equipment within
this frequency range may cause acoustic irregularities in the sonar image.
If required, the ISS360 operational frequency can be adjusted to move it out of band with
other equipment.
