new products · sonar systems & seafloor mapping
Two Multibeam FATs for USN Oceanographic
Kongsberg Underwater Technology, Inc. reports the acceptance by the U.S. Navy in December 2007 for two more multibeam upgrades for its fleet of oceanographic vessels. These two systems are part of the $42m contract for upgrades to the six existing and one future T-AGS 60 class survey vessels operated by the U.S. Naval Oceanographic Office (NAVOCEANO). The new sonar systems are replacing current equipment, including the Kongsberg EM 121A, 12 kHz multibeam originally installed when the vessels were constructed in the early 1990s. The FAT included five fully integrated sonar systems: USNS Sumner in drydock. · EM 122 (1° x 1°): Deep-water Multibeam echo Sounder (DMS) for mapping to full ocean depth · EM 710 (0.5° x 1°): Shallow to Intermediate depth Multibeam echo sounder · EA 600 (200, 38, 12 kHz): Multi-frequency Single Beam echo (MSB) sounder for surveying in all depths · SBP 120 (3° x 3°): Deep-water Sub-Bottom Profiler (DSBP) for high-resolution sub-bottom data to full ocean depth · ADCP (supplied from Teledyne RD Instruments): Multi-frequency Doppler Current Profiler for shallow and deep current profiling Additionally, Kongsberg's new Sonar Synchronizing Unit (SSU) was tested and delivered. The SSU will be used to eliminate acoustic interference between the many sonars located onboard. from up to 12 digital (RS-232/RS485) and analog sensor inputs. The compact unit is designed for in-situ acquisition of a wide variety of subsea mechanical, thermal, optical, biological, chemical and magnetic phenomena in ocean environments down to 6,000m. It can also be used to control pumps, valves and other subsea electro-mechanical devices. The electronics, optimized for low power consumption, are designed for ambient temperatures from -2°C up to +50°C. The built-in 24 bit high performance A/D converter allows simultaneous measurement from up to 12 sensor inputs. Standard parameters include conductivity, temperature and depth. The integrated MEMS accelerometer and gyro can measure 6DOF movement up to 8G. The instrument can be supplied as a stand-alone device or interfaced to a suite of 3rd party sensors. Optional
56 MTR
sensors include strain, turbidity, dissolved oxygen, methane, pH, C02 and others. DataSquid employs an advanced modulation scheme to overcome multipath, improve signal integrity and enhance underwater communications. It has an onboard digital signal microcontroller that processes signal data to minimize underwater noise and interference. This capability significantly enhances telemetry between DataSquid and the surface with a standard transmission range of 3,000 metres (6,000 metres optional) with standard transmission speed of 1 kbps (10 kbps optional). DataSquid will be available in June, 2008. While pricing has not been yet finalized, an entry level system is expected to retail for approximately $10k.
For more information, Email gleyte@marport.com
IXSEA Equips Seatronics with PHINS 6000
Ed Cheesman, Technical Sales Manager, IXSEA, delivers the PHINS 6000 to David Currie, Managing Director, Seatronics Ltd.
IXSEA delivered a PHINS 6000 inertial navigation system to Seatronics. PHINS 6000 with DVL Ready option is a subsea inertial navigation system, providing subsea vehicles with position, true heading, attitude, speed and heave. Its inertial
April 2008
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