Decimetre-level Positioning System for Hydrographic Applications

Fugro has introduced a new service called Fugro High Performance (HP) with design goal of 0.2m 95 per cent horizontal and 0.3m 95 per cent vertical. Both monitoring data and field results are presented showing a performance well within these criteria. This new high accuracy service has expanded the applications for real-time DGNSS in both static and mobile environments. One such application is real-time tidal measurements through accurate height determination of an offshore survey vessel. In recent years various applications have emerged in offshore and land environments requiring decimetre accuracy real-time positioning. This level of accuracy has been either impossible... (read more)
2008-01-01 01:00:00

Snow Crab Tracking Using Wave Gliders

New Technology Bringing Science and Industry Together
Coastal communities around the globe are seeking better ways to understand and manage regional ecosystems. They depend on the ocean to sustain economic opportunities, ensure food security and safeguard fragile environments and species. For harvesters, scientists and government organisations in Nova Scotia, Canada, timely, accurate and comprehensive data on movements of valued species as crab is essential for designing effective fishery management regimes. Ocean Tracking Network (OTN), the Canadian government and local harvesters have been tagging and monitoring aquatic animals for years. But not all tracking methods are practical or cost-effective for highly mobile, yet slow moving animals like snow... (read more)
2017-06-19 01:57:59

Hydrography Will Be Big Contributor Filling the Digital Aquarium

Hydro International Interviews Mathias Jonas, Secretary-General of the International Hydrographic Organisation
The new secretary-general of the International Hydrographic Organisation (IHO), Mathias Jonas, has had a long career, now culminating in the highest rank within the world’s leading organisation for hydrography. He took office this autumn, succeeding Robert Ward, after he was elected in spring this year by the Member States. 'Hydro International' of course wants to know what Dr Jonas envisions for hydrography and the wider world it influences. Mathias Jonas starts off by sharing how he was already in touch with IMO and IHO in the nineties. ‘Arriving at the German maritime administration as a young professional mariner and as one... (read more)
2017-12-05 01:50:23

RTK River Bathymetry in Africa

From Syledis and Tide Gauge to RTK GPS Water-level Corrected Survey
This article describes the installation of a hardware and software system for bathymetric surveys in the maritime part of the Congo River. The ‘Regie des Voies Maritimes’ (RVM) is a Congolese public administration in charge of an operational navigation river lane in the Congo maritime reach. The Congo River has the second lar­gest flow in the world and is 4,700km long. RVM maintains the conditions for commercial navigation in the so-called ‘maritime area’, from the mouth to Matadi harbour, over a distance of 150km. The estuary is the only maritime border of the Democratic Republic of the Congo (DRC), with... (read more)
2007-11-27 12:00:00

Global Navigation Satellite Systems

Infrastructure Status and Developments
The concept of GNSS was first introduced by the European Space Agency (ESA), the European Commission (EC) and Eurocontrol in the early nineties. They defined requirements for a European GPS augmentation system, GNSS-1, and a full European satellite navigation system, GNSS-2, later together renamed EGNOS (European Geostationary Navigation Overlay System) and Galileo. Satellite navigation infrastructure status and developments are described here. Nowadays the term GNSS is used for the system of systems comprising GPS and GLONASS, with the later addition of Galileo. Satellite-based and ground-based augmentation systems (SBAS and GBAS) were introduced to augment GPS and GLONASS. Hydrographers were early... (read more)
2008-01-01 01:00:00

What is the Manufacturer’s view?

Interview with Steve Berglund, President and CEO, Trimble
In the previous series of interviews, Hydro international has paid much attention to conferences, standards of competence, survey companies, etc. Aiming at the total filed of hydrography we also wish to pay attention to the section of developers and manufacturers of equipment. Steve Berglund, CEO of Trimble, an internationally known manufacturers of hydrographic equipment and thus a representative example, agreed to be interviewed and disclose some insight information from that part of the hydrographic scene. Please give our readers a summary of your education, career development and your involvement in hydrography (if any) Steven W. Berglund joined Trimble as President... (read more)
2008-01-01 01:00:00

Mariners Need More Current Hydrographic Data

Hydro International Interviews Rear Admiral Christian Andreasen, NOAA (Ret.)
Almost 50 years in hydrography gives you insight and authority to talk about the field and the changes it has gone through in half a century. Rear Admiral Christian Andreasen talks about his career. He is certainly not somebody who only looks back, but is still looking into the future, sharing strong ideas about where hydrography will need to go: ‘Mariners do not understand why hydrographic offices are not more supportive. Finding ways of providing mariners with more current data is an issue.’ Since the 1960s, when you became a hydrographer up to the present, the means and techniques for... (read more)
2012-06-06 03:35:09

Shallow Survey 2003

Interview with Dr Phil Chapple, Scientist, Conference Convenor, Australia
After completing a Bachelor of Science with Honours in Physics in 1983, Dr Phil Chapple worked in a laboratory of the Australian Defence Science & Technology Organisation (DSTO) where lasers were being developed for Australia’s Laser Airborne Depth Sounder (LADS). He returned to university to study for a PhD in Physics (laser spectroscopy), returned again to DSTO to investigate laser-material interactions and later worked some years on statistical image processing techniques. He completed the degree of Master of Mathematical Sciences (Signal & Information Processing), meanwhile learning details of sonar signal processing. In 1999 he moved to the DSTO Maritime Operations... (read more)
2008-01-01 01:00:00

Shallow Survey 2005 Common Dataset Comparisons

Shallow Survey 2005 Common Dataset Comparisons As part of the Shallow Survey Conference 2005 held in Plymouth, swath sonar manufacturers were invited to survey a common dataset. Two regions were chosen: an offshore area south of Plymouth breakwater suited to larger vessels and Lidar operations, and an inshore area around Plymouth Hoe. The data collected for the inshore area serves as the basis for this study. The manufacturers and systems that provided data for the inshore area are listed in Table 1. Each of the surveys was undertaken with the same supporting equipment, and mostly using the same vessel. RTK... (read more)
2008-01-01 01:00:00

Technology for Hydrographic Purposes

Interview with Erik Hammerstad, Kongsberg Maritime AS
Hardware (and to a lesser extent software) for the hydrographic survey industry is mostly developed by technical experts not educated as hydrographic surveyors. Nevertheless, manufacturers have come up with equipment that has broadened and hugely opened up the possibilities for hydrographic and oceanographic investigations. What is the link between hydrography, which still very much depends on field experience, and technological developments? Or how is technology directed towards the invention of usable and workable equipment for hydrography? Hydro international interviewed Erik Hammerstad, Senior Principal Engineer /Hydrography Subsea of Kongsberg Maritime AS Norway. Please tell our readers something of your professional education... (read more)
2008-01-01 01:00:00
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