Sound Velocity Sensor

Valeport's miniSVS sound velocity sensor has been upgraded to offer higher specifications, with temperature or pressure measurement options. The miniSVS has been engineered to now include a high-accuracy PRT temperature sensor to increase versatility and compatibility with third-party systems. Together with standard titanium housing and a specially developed carbon composite sensor, the miniSVS offers durability and resistance to corrosion. The carbon composite sensor offers benefits in resisting deformity due to impact, thus not affecting calibration, and has virtually zero expansion with temperature, so that acoustic path length remains constant whatever the water temperature. Valeport's digital signal processing technique ensures that... (read more)
2005-06-23 12:00:00

Gyrocompass and Motion Sensor

The OceanFOG north-seeking gyrocompass is a compact survey-grade gyro offering extremely fast run-up times of less than three minutes and also features an integral motion sensor that calculates heave to a typical accuracy of 5cm or 5%. Unlikeolder and potentially unreliable ring-laser gyros with their inherent longrepair times, the OceanFOG uses state of the art fibre-optic gyros and MEMSaccelerometers. What setsthe OceanFOG has a standard list price at around two-thirds of the price of itsnearest competitor and that is comes with a conditional lifetime warranty.   (read more)
2010-09-20 05:01:52

DP Reference Sensor Contract

Dynamic Positioning Services has been awarded a contract by Shell U.K. to supply and support a Guidance Navigation DP Reference sensor called RadaScan. The contract involves the installation of up to eleven RadaScan systems on board Shell’s contracted fleet of platform supply vessels, and the supply of ninety passive positioning transponders which will be installed on all Shell North Sea installations and mobile drilling unit supported from Aberdeen (UK). RadaScan is an advanced radar based positioning sensor for DP vessels, which was released to the market in 2006 following four years of development by Guidance Navigation, a Leicester-based company. The... (read more)
2007-04-25 09:46:04

Motion Sensor Performance

Direct Comparison Using 2005 Common Dataset
Integral components of a swathe bathymetry system are the motion and heading sensors. The current trend is to offer a system that combines both components in one package, either as an aided inertial sensor or as two sensors linked by component software. The quality of these inertial sensors has a direct effect on the quality of the final survey. This paper compares five leading available sensors, concluding that they produce markedly differing results. Most surveyors when purchasing or specifying a particular inertial system for a project will base their decision on information generated by the manu-facturers, which often shows all... (read more)
2008-01-01 01:00:00

Free Sensor Workshop

The free workshop 14th Biennial Challenger Conference for Marine Science Challenger 2010: "Microfluidics and Sensor Technology for Oceonographic and Environmental Science Applications" is to be held in the Centre for Marine Microsystems at the National Oceanography Centre (NOC) in Southampton, UK on the 10th September 2010. This workshop will facilitate to learn about exciting developments in microfludics and sensor technology and awareness of how these technologies will impact future oceanographic research. Current sensor systems for ocean biogeochemistry are mostly large expensive devices requiring expert operation and intervention. However, widespread multi-parametric measurements are often precluded due to their large size and... (read more)
2010-07-16 10:52:59

Valeport Introduces Pressure Sensor

UK-based Valeport has added a pressure sensor to its range. The ultraP has been redesigned from the connector up. This has resulted in an exchangeable pressure sensor which is ultrafast, compact and dependable, providing levels of performance that are demonstrably ahead of competitive products. Suited to system integrators and OEM applications, the new ultraP has been designed to allow users to maintain the best possible accuracy with the facility to select the depth rating that best suits the user’s operational depth, with options from 10 through to 600bar. The pressure sensor, housed within the ultraP’s rugged titanium casing, is a... (read more)
2015-05-11 09:26:20

Peripheral Survey Sensor Guidelines

The ‘Guidelines for the management of peripheral survey sensors’ (IMCA S 021) have been developed under the direction of the International Marine Contractors Association (IMCA, UK) Offshore Survey Division management committee. The document provides guidance towards a more standardised approach to the timing of checks, verifications and calibrations, leading to more consistent maintenance practices and potentially better management of survey applications. In addition to the Executive Summary, the 24-page document includes a glossary and details of terminology used and an introduction. There is a section devoted to general considerations highlighting five main areas – testing as a function of time,... (read more)
2013-12-12 09:51:52

Multi-sensor Mapping

Integrating Data Streams for Coastal Science and Management
Among the most exciting advances in remote sensing are the innovations being made in multi-sensor data fusion. This can exponentially increase both the quality and quantity of information in the sensed environment. View Larger Map Scientists and practitioners in the National Oceanic and Atmospheric Administration (NOAA) and across the Federal government collect and use remotely sensed data for a wide range of activities including coastline mapping, military and disaster response personnel support, weather tracking, ecosystem monitoring and also to inform coastal planning officials and decision-makers on climate change adaptation strategies. Researchers continually strive to enhance the value, timeliness and efficient... (read more)
2009-02-27 12:00:00

Submarine Sensor Support Contract

Chelsea Technologies Group has been awarded a nine and a half year contract by J+S Ltd to provide post-design services for support of the Sonar 2081 submarine oceanographic sensor suite, under the Miscellaneous Sonar Equipment programme. The oceanographic sensors are designed to provide improved situational awareness and enhanced knowledge of the ocean environment. The robust, high precision sensors incorporate novel built-in-test technologies to extend calibration intervals and decrease maintenance costs.The work, which includes service, repair and calibration, will be undertaken at Chelsea's facility in the UK utilising the NAMAS accredited calibration laboratory. (read more)
2010-03-25 10:21:54

Sonardyne Motion Sensor Technology

Sonardyne International has launched a new marine Attitude Heading and Reference System (AHRS): Lodestar. Lodestar has been developed to overcome the problems associated with conventional sensor platforms. The Lodestar AHRS is a natural extension of the Sonardyne product range and has been developed for seamless integration with the company’s widely used LBL (Long BaseLine) and USBL (Ultra-Short BaseLine) acoustic positioning systems. It will also be welcomed by users with any requirement for motion compensation to support operations in any sea conditions. These are likely to include platform stabilisation, dynamic positioning, buoy monitoring, subsea construction and towfish and ROV/AUV operations. Available... (read more)
2007-04-05 02:42:46
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