Installation manual

Simrad SP70
8
850-164186 / Rev.D
Functional description
Introduction
The basic principles of the SP70 sonar are unique because of the
241 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
the results of sophisticated digital signal processing software
and state of the art hardware.
Functional principles
When the Omni beam is tilted, the total beam picture can be
compared with folding an umbrella, which means that all beams
in 360 degrees around the vessel have the same tilt angle.
Omni beam
principle
In the standard version, the beam can be tilted from +10 up to
-60 degrees down. For the optional 90 degrees tilt version, the
beam can be tilted from +10 up to -90 degrees down, where -90
degrees is formed by one single beam straight down like an echo
sounder.
In addition to seeing the target from above, it is also possible to
see the target from the side, by using the vertical slice
presentation. In this case the beam covers a continuous vertical
beam from 0 to -60 degrees in one transmission. For the
optional 90 degrees tilt version, a complete 180 degrees vertical
slice can be presented.