Major Savings Through Acoustic Positioning

CSA International Inc, an environmental survey company working in the Gulf of Mexico, has become the first organisation in the world to purchase a new ‘calibration-free' acoustic positioning system launched by Sonardyne International Ltd. The GyroUSBL (see image) integrates Sonardyne's Lodestar Attitude and Heading Reference System (AHRS) and sixth generation (6G) Ultra-Short BaseLine (USBL) transceiver into a single unit and was shown to offer operational benefits during a deepwater ROV survey carried out earlier this summer.   Most USBL positioning systems need to undergo a calibration process to determine the precise alignment offsets between the acoustic transceiver and the vessel's... (read more)
2011-08-23 02:55:01

Field-swappable Sound Velocity Sensor

Applied Microsystems (AML) announces the launch of SV-Xchange - the world's only exchangeable, field-swappable sound velocity sensor. Any SV-Xchange sensor can be connected to any Xchange enabled instrument without compromising calibration accuracy.   At time of recalibration, spare calibrated sensors can be shipped to the instrument, allowing the instrument to stay in the field. Recalibrated sensors can be scheduled for just-in-time delivery, eliminating the headache of managing calibration expiry dates. The small sensors - not heavy instruments - can travel to and from the factory, thus saving shipping costs and brokerage fees. Damaged or out-of-calibration sensors can be swapped for... (read more)
2008-03-06 02:16:17

HIPS and SIPS 8.0 Featuring Water Column Data Supplementation

CARIS has released CARIS HIPS and SIPS 8.0. HIPS and SIPS offers a single solution for bathymetry, seafloor imagery and water column data processing. The new release includes some significant enhancements, such as the continued implementation of water column data processing allowing the data to be supplemented into the bathymetry, the redesigned calibration tools in Subset Editor and the new HIPS project database allowing for faster open times and multi-user access. Following the introduction of water column data processing in HIPS and SIPS 7.1.1, the continued development in HIPS and SIPS 8.0 allows users to supplement the bathymetry in existing... (read more)
2013-04-04 09:20:10

RapidEye Introduces Image Gallery

RapidEye has opened a new image gallery on their website. The image gallery will feature high resolution satellite images taken from around the world by RapidEye's constellation of five spacecraft. RapidEye plans to update the image gallery regularly as new, exciting images become available.     "RapidEye's image gallery highlights a small sample of the images provided lately by our satellites and makes them accessible to everyone." comments Michael Prechtel, head of RapidEye's marketing and sales.   System commissioning and calibration activities are advancing. "Having obtained good images from each of the five cameras makes us confident that all cameras... (read more)
2008-12-02 01:52:26

How to Simplify Survey Reporting

Wouldn’t it be great to work on a hydrographic project without spending a lot of time looking for all the elements needed for a professional report? This was what Sanyal Sunil had in mind when he developed SURge, a digital tool to simplify survey reporting. Wouldn’t it be great to work on a hydrographic project without spending a lot of time looking for all the elements needed for a professional report? This was what Sanyal Sunil had in mind when he developed SURge, a digital tool to simplify survey reporting. Hydrographic survey reporting has always been a headache for surveyors in the field, as they have to spend a lot of time formatting the reports, finding the correct logos and diagrams, displaying observations schematically, and carrying out irrelevant calculations, all of which have to be neatly represented in the report but have nothing to do... (read more)
2020-02-24 02:03:38

The MRU and SRF Aligned (II and III)

The alignment of the motion reference unit (MRU) is important for the accuracy of a multi-beam survey. The patch test is mostly used to solve angular offsets between the multi-beam head and the MRU; however, this does not solve all the aspects that must be taken into account. This article in two parts describes the method used by the Survey Department of the Directorate-General for Public Works and Water Management (Rijkswaterstaat; The Netherlands), which for reference purposes in this article we shall call the ‘Dutch method’.<P> As explained in Part I in theprevious issue of Hydrointer­national, the alignment of the... (read more)
2009-01-05 12:00:00

Two Salinometers a Month

OSIL have recently been busy supplying Guildline salinometers to customers around the world. At a rate of 2 units per month, OSIL have sold Autosals and Portasals to clients in Brazil, Germany, Hawaii, Italy, Japan, Saudi Arabia, South Africa and the USA. Examples of uses include installation on new research ships for the German Navy and University of Cape Town, fisheries research in Kushira and CTD calibration in USA and Far East. The Guildline Autosal remains the instrument of choice for the highest precision measurement of Practical Salinity with the Portasal providing similar accuracy in a more portable form.OSIL Seawater... (read more)
2010-02-25 09:08:01

GNSS Receiver for Time and Frequency Transfer Applications

Septentrio has launched a GNSS receiver for dedicated time and frequency transfer applications: the PolaRx5TR. The PolaRx5TR has 544 hardware channels and supports all major satellite constellations including GPS, GLONASS, Galileo, BeiDou, QZSS and IRNSS. A calibration circuit is incorporated into the PolaRx5TR to measure and compensate for the internal delay. This feature removes the need for calibration using external equipment and ensures measurement latching is always accurately synchronised with the PPS input. Septentrio’s PolaRx5TR is compliant with the format CGGTTS version V2E of Consultative Committee for Time and Frequency (CCTF) recommendations. Also included as standard is Septentrio’s Advanced Interference... (read more)
2016-09-12 10:45:59

SMD Hydrovision Licences Bathymetric System Technology

Sonavision and SMD Hydrovision have reached agreement for the transfer of service and calibration the UK90 and UK94 Bathymetric systems and design and development of a successor. These products were developed in the 1990’s and quickly became market leaders. Many remain in use today. Sonavision will, under licence, offer service and calibration services for the systems from their Aberdeen base, and will introduce an updated version in late 2006 as part of their new complete ROV sensor package. A Bathymetric, or “bathy�, system, normally mounted on a remotely operated vehicle, measures depth of sea water, temperature and altitude above the... (read more)
2006-06-20 12:00:00


Electronic Devices Inc. (VA, USA) has released an advanced depth sounder test set with new features. The DSTS-5A features include: Electronic attenuator with increased range of 86 dB; Dual frequency operation; Tracks and responds to dual frequency sounders accurately; Depth resolution of 1 mm; Total depth to 99000 feet; and Internal space for custom load installation. Other features are: - Same RS-232 command structure as the DSTS-4A for plug and run compatibility with existing DSTS-4A test setups and software. - Two-year calibration cycle does not require disassembly of the unit. Calibration is done using RS-232 and required adjustments are internally... (read more)
2008-07-14 10:58:21
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