881a is a programmable multi
digital imaging sonar that you can operate using default frequency
settings or customize the configuration for your own situation. High
performance, lower cost, low power and simple setup and installation,
make this sonar perfect for the largest ROV’s to the smallest
inspection ROV’s, plus AUV or UUV applications
The Imagenex 881a
small and simple
THE IMAGING SONAR ON AN ROV
imaging sonar is a useful substitute for a positioning system on an ROV.
Without an imaging sonar, an ROV relies on traveling underwater to bring
new targets into view. With an imaging sonar, instead of traveling it is
more useful to spend some time with the vehicle sitting on the bottom
while the sonar scans the surrounding area. Scanning a large area takes
only a short time, and the vehicle pilot can quickly assess the nature
of the surrounding area. The ability to ”see” a long distance
underwater allows the pilot to use natural or man-made features and
targets as position references.
Seabed Dredger with the Sonar Module mounted on the front frame
combination of an imaging sonar and an ROV leads to fast and effective
training in sonar interpretation. If the ROV pilot is searching for a
particular object, recognition can take place directly from the sonar
image. In other cases a number of potential targets may be seen. A pilot
can sharpen his sonar interpretation skills by viewing these targets
with the vehicle’s video camera and correctly identify them.
AUV and UUV
Oil & Gas
881a incorporates latest technological advances allowing multi-frequency
capabilities from one compact digital sonar head.
Imagenex Windows 95, 98, NT compatible software controls, display, and
records data from the 881a digital sonar head.
Sonar Image plotted on a laptop screen using the sonar
head on a 3 meter sector scan of a sign at 1 MHz: Insert Photo of sign.
default settings of 310 kHz, 675 kHz and 1 MHz. Other frequencies can be
selected through programmable software configurations.
310 kHz, 4°
675 kHz, 1,8° x 20° and 1 MHz, 0,9° x 10°
protective transducer housing. 360° continuous rotating. Polar mode,
sector mode, single sidescan mode.
20-36 VDC at
less then 5 watt.
115,2 Kbaud or optional RS-232
length: 1000 m om typical twisted shielded pair
depth: 1000 m and 3000 m available.
side mounted four conductor wet mateable connector.
mm diameter x 181 mm length.
1,5 kg in air and 0,6 kg in water