Heave Compensation and INS Ensured Successful Arctic Surveys

Calesurvey had been commissioned to conduct survey work in the seas around Greenland, where challenging, long-period swells are common. The company required a motion sensor, especially focussing on heave compensation performance, to use in conjunction with a variety of instruments, one of them being a R2Sonic multibeam echosounder (MBES), onboard the DP-2 geophysical survey vessel Kommandor Stuart.     iXBlue's ROVINS units were proposed to provide the necessary input required by the MBES. ROVINS is based on iXBlue's innovative fibre-optic gyroscope technology and is an underwater product intended for use by the offshore industry in water depths of up to... (read more)
2011-10-03 10:45:43

SONIC 2024 Multi-Beam with INS for Plymouth University

Swathe Services, UK, was recently awarded the tender to supply Plymouth University with a complete hardware and software MBES solution. Overseen by Jon Holmes from the Hydrographic Academy, the university has ordered a SONIC 2024 with integrated INS, ultra high-resolution 700kHz mode, TruePix and water column capability; a Valeport MiniSVS and an Amplicon Navigation Processor. Data acquisition will be through the existing QINSy package. However post processing will be undertaken using Applanix POSPac and CARIS (HIPS and SIPS) software. This system will be supported by Swathe Services over a 5-year period and will satisfy the requirements of additional BSc Ocean... (read more)
2013-09-17 11:02:10

NovAtel Expands IMU Options for SPAN GNSS+INS

NovAtel has announced the addition of two new Inertial Measurement Unit (IMU) products to its SPAN technology portfolio. SPAN tightly-couples NovAtel’s industry leading Global Navigation Satellite System (GNSS) precise positioning technology with robust Inertial Navigation Systems (INS) to provide continuous 3D position, velocity and attitude solutions. The Litef- µIMU-IC is suited for aerial and hydrographic survey as well as space constrained industrial applications. The µIMU is available as a complete assembly in an environmentally sealed enclosure or as a standalone OEM product, both compatible with the company’s OEM6 and OEM7 SPAN receivers. NovAtel has also developed an enclosure for the... (read more)
2016-09-19 09:09:05

INS/GNSS Inertial Navigation System for Maritime Applications

With iMAR Navigation’s iNAT-RQT-4003, an RLG-based highly accurate INS/GNSS system is launched which is not affected by any ITAR regulations and which is handled under standard dual-use export control only. The system is designed for navigation and guidance applications as well as for most accurate surveying applications with interface capabilities to external sensors like USBL or DVL. The iNAT-RQT ('iNAT' stands for 'iMAR Navigation & Timing') is the successor of the iNAV-RQH system, which has now been on the market for more than 15 years. The new version has lower power consumption, smaller size, less weight and extended interface capabilities including Ethernet... (read more)
2016-08-01 08:49:17

Rugged FOG-based INS for Demanding Autonomous Applications

KVH Industries, USA, has introduced the GEO-FOG 3D inertial navigation system (INS) offering roll, pitch, and heading accuracies of .05° for demanding applications in unmanned, autonomous, and manned aerial, ground, marine, and subsurface platforms, such as subsea remotely operated vehicles (ROV) or mining systems. The GEO-FOG 3D is based on the company’s high-performance fibre optic gyro (FOG) technology combined with centimetre-level precision RTK GNSS receivers and advanced sensor fusion algorithms. The result is a solution that continuously provides fast, ultra-accurate position, velocity, and attitude measurements that keep applications operating no matter how challenging the conditions. The core inertial sensor for... (read more)
2016-01-14 11:39:05

New TOGS2 Compact and Low-cost Subsea INS

CDL’s original TOGS system was recognised as the winner of the Subsea UK’s Subsea Industry Innovation and Technical Award. In an effort to follow on from its success, CDL has designed a second-generation system known as TOGS2. TOGS2 is 40% smaller, uses 50% less energy and has more than ten times the processing power. The system incorporates the latest iXBlue FOG IMU (Inertial Measurement Unit) and is optimal for advanced INS functionality. TOGS2 has several new communication interfaces including RS232, RS485, Ethernet and USB. In addition, TOGS2 can take advantage of CDL’s SIDIUS technologies enabling some added features, such as:... (read more)
2013-04-08 12:00:00

SBG Systems Unveils Qinertia INS/GNSS Post-processing Software

SBG Systems has taken a major step in the surveying industry by unveiling Qinertia, its in-house post-processing software, at the Ocean Business show (UK). After the survey, this full-feature software gives access to offline RTK corrections, and can process inertial and GNSS raw data to further enhance accuracy and secure the survey. Whether the survey is made from a car, a UAV, a plane or a vessel, Qinertia Post-Processing Kinematic (PPK) software will secure and enhance the acquisition. Complete INS/GNSS Post-Processing Software After the mission, Qinertia gives access to offline RTK corrections from more than 7,000 base stations located in... (read more)
2017-04-04 12:29:27

INS for New Spanish Navy Maritime Action Ships

Northrop Grumman Corporation has won a contract to supply high-accuracy inertial navigation systems (INS) for four new Buques de Acción Marítima (Maritime Action Ships) being built for the Spanish navy at the Navantia shipyard in Ferrol, northwest Spain. The contract, valued at more than USD1.5 million, was awarded by Navantia to Northrop Grumman's Sperry Marine business unit. Installation, commissioning and trials will be overseen by Aeromarine in Spain.   Each of the ships will be fitted with one MK 39 Mod 3A ring laser gyro (RLG) INS and one MK 27 fiber-optic gyrocompass. The MK 39 Mod 3A will provide... (read more)
2008-08-19 10:13:25

INS interest Leads at ‘Life of Field’ Workshop

Sonardyne’s recent ‘Life of Field’ two day workshop was well attended by over 40 industry professionals, ranging from major oil representatives through to vessel Masters. Held at the 4 Points Sheraton Hotel, Houston, USA, day 1 focused on acoustic positioning techniques whilst day 2 looked at advances in Metrology, Autonomous Monitoring and Inertial Navigation Systems (INS). With sessions delivered by members of Sonardyne’s Survey Support Group (SSG), attendees debated achievable accuracies in acoustic positioning and how to optimise equipment selection for subsea positioning tasks in the field development phase. The second day’s presentation of inertial and autonomous monitoring technologies generated... (read more)
2012-08-23 09:45:33

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
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