LinkQuest Compact DVL

LinkQuest has presented the NavQuest 600 Micro DVL and claims it's the world's smallest Doppler Velocity Log. In its standard configuration with pressure housing, NavQuest 600 Micro DVL is about 12.6cm in diameter, 17.0cm in length and weights less than 1.2 kg in water. In the OEM configuration without pressure housing, the NavQuest 600 Micro DVL weighs less than 0.8kg. The NavQuest 600 Micro DVL is capable of reaching up to 110m in maximum altitude (range) with an accuracy of 0.2% +/- 1 mm/s. LinkQuest's acoustic Doppler technology also achieves an altitude of up to 0.3m, allowing robust navigation close... (read more)

2007-03-07 10:46:48

Explorer DVL for Littoral Vehicles

RD Instruments has introduced the Explorer Doppler Velocity Log (DVL), designed to provide precision navigation and current profiling capability aboard small littoral platforms such as AUVs, gliders, expendable UUVs, inspection-class ROVs, and diver platforms. Remote electronics allow for easy installation and a choice of transducers. Explorer also boasts an open architecture design capable of interfacing with other onboard sensors such as pressure, GPS, CTD, gyro and magnetic compass. (read more)

2005-10-10 12:00:00

Online, Interactive ADCP/DVL Instruction

Utilising WebEx technology, RD Instruments has implemented a new and innovative e-learning program designed to provide its customers with ongoing internet-based ADCP (Acoustic Doppler Current Profiler) and DVL (Doppler Velocity Log) training. All courses are fully interactive and include a visual presentation, accompanied by real time communication between RDI’s instructors and the course attendees. Designated as RDI University, this program allows busy ADCP and DVL users to attend these free courses via the internet from the comfort of their own office. Each course is led by a highly qualified trainer from the RDI staff, with 40 minutes dedicated to course... (read more)

2004-07-26 12:00:00

Micro DVL Gains High Popularity

LinkQuest's NavQuest 600 Micro DVL (Doppler Velocity Log) has gained world-wide popularity in year 2007. Since its commercial launch less than a year ago, the Micro DVL, with depth rating from 800 to 7000 metres, has been sold to more than 10 countries to organisations such as Fugro and NOAA and small university research groups alike. Applications include deepwater AUV navigation, shallow water AUV navigation, ROV station keeping, ROV velocity, altitude and current speed monitoring, manned submersible navigation, and diver navigation. In its standard configuration with pressure housing, NavQuest 600 Micro DVL is about 12.6cm in diameter, 17.0cm in length... (read more)

2007-12-31 10:04:44

Explorer DVL for Renewable Energy Project

Teledyne RD Instruments, USA, recently supplied an Explorer Doppler velocity log (DVL) to Oregon State University’s School of Mechanical, Industrial, and Manufacturing Engineering for a renewable energy project in partnership with the Northwest National Marine Renewable Energy Center. Designed to provide navigation aboard small underwater platforms, the Explorer DVL will be integrated on a Teledyne SeaBotix ROV for a project that aims to minimise downtime during AUV deployments. Decrease Maintenance and Intervention Time According to the project’s co-principal investigator and assistant professor of mechanical engineering at Oregon State University Geoff Hollinger, Ph.D., Teledyne RDI’s Explorer DVL is a key component... (read more)

2015-06-11 09:17:59

Explorer DVL for Precision Navigation Iver AUVs

Teledyne RD Instruments’ (TRDI, USA) Explorer Doppler Velocity Log (DVL) has been specified by OceanServer to provide precision navigation onboard its IVER2 and IVER3 autonomous underwater vehicles (AUVs). OceanServer has recently placed an order for 10 Teledyne RDI Explorer DVL products, bringing the total number of DVLs ordered for IVER systems to 22. The Explorer DVL provides a flexible solution for high-quality navigation aboard small underwater platforms such as IVER AUVs, gliders, disposable vehicles, inspection class ROVs and diver platforms. The Explorer DVL has been designed specifically for this next generation of shallow water platforms, which require field proven precision... (read more)

2014-07-03 08:44:29

Explorer Doppler Velocity Log (DVL) for Littoral Vehicles

RD Instruments introduces the Explorer Doppler Velocity Log (DVL), designed to provide precision navigation and current profiling capability aboard small littoral platforms such as AUVs, gliders, expendable UUVs, inspection-class ROVs, and diver platforms. The product’s remote electronics allow for easy installation, and a choice of transducers. Explorer also boasts an open architecture design capable of interfacing with other onboard sensors, such as pressure, GPS, CTD, Gyro and magnetic compass. (read more)

2005-09-09 12:00:00

Iver3 with Rowe DVL for US Navy

The US Naval Undersea Warfare Center (NUWC) has recently awarded a contract for an Iver3 AUV. The system will include several options for the Iver3, including the Rowe Technologies (RTI) SeaPilot 600kHz Doppler Velocity Log with ADCP. The RTI’s SeaPilot family of DVLs represents one of the recent products including a compact form factor and powerful electronics. It is capable of producing precise bottom referenced velocity and/or current profile measurements for ROVs, AUVs and other manned and unmanned submersibles. For the integration in the Iver3, RTI supplied four individual piston transducers along with compact electronics to integrate into the AUV. (read more)

2014-10-13 09:57:24

Syrinx DVL for Flagship Canadian Ocean Science ROV

Doppler Velocity Log (DVL) technology from Sonardyne (USA) has been selected to help navigate Canada’s flagship undersea research vehicle, ROPOS. The order for a 4,000 metre depth rated, 600kHz Syrinx DVL was placed by the Canadian Scientific Submersible Facility (CSSF), the not-for-profit corporation who operate ROPOS, following a trial to evaluate its capabilities. This concluded that Syrinx was able to maintain, and regain bottom lock over a wide range of altitudes and seafloor terrains including soft fine sediment and rugged steep slopes close to hydrothermal vents. ROPOS (Remotely Operated Vehicle for Ocean Sciences) is a modular work-class ROV which can... (read more)

2016-09-20 04:27:45

INS and DVL for Out-of-Straightness Surveying

Inertial and Doppler, the Perfect Combination for 3D Pipeline Buckle Surveys

The move to deeper water, the proliferation of subsea completions, and the continued drive to lower costs are driving the requirement for more accurate out-of-straightness surveys. Pipelines are being designed to higher tolerances and are carrying warmer products at higher pressure. It is assumed that pipes will expand and move throughout their lifetime. Surveys are required to confirm that there are no un-planned buckles in the line. This article shows how INS (Inertial Navigation System) and DVL (Doppler Velocity Log) may be combined to meet these requirements. Out-of-straightness surveys are required to confirm that the pipe has moved as expected... (read more)

2012-04-19 04:27:25