Geospatial Data in Support of 3D Cadastre

Zooming in on Recent Technical Developments
The urbanization trend is leading to an increasing number of people living in cities, thus also placing new demands on cadastral registration. To be able to register the complex infrastructures and built-up areas properly, the cadastre will need to consider the third spatial dimension. The 3D cadastre is based on 3D parcels (spatial units) which are single volumes (or multiple volumes) of space. Although the technology offers numerous possibilities for implementation of the 3D cadastre, there are still some open issues, as this article explains. We live in a three-dimensional world. Over the past decades, there have been an increasing... (read more)
2019-05-22 08:21:03

GNSS Positioning

Status and Features
Nowadays, GNSS receivers have scores – and often hundreds – of channels, enabling them to track GPS, Glonass, Galileo and Compass signals simultaneously. The whole workflow from satellite tracking to calculating the coordinates of the position in a preferred reference system can be conducted automatically in real time. The price of GNSS receivers has dropped steadily since the first GPS receivers came onto the commercial market in 1982. In conjunction with the latest product survey results for GNSS receivers (available at www.geo‑matching.com), the author puts today’s GNSS status and features in perspective. (By Mathias Lemmens, senior editor, GIM International, The... (read more)
2012-12-18 01:53:20

A Visit to...Hewlett Packard Barcelona

Hewlett Packard (HP) celebrates the twentieth anniversary of its Barcelona site this year. The company has a portfolio spanning printing, personal computing, software, services and IT infrastructure, and Barcelona is the nerve centre of its predominant large-format printing activities. On 3rdand 4thApril 2008 the international professional press was invited to look ‘Behind the Scenes’.<P>   "Our workforce in Barcelona consists of more than two thousand people, including employees working in our engineering and support facilities," Francois Martin introduces us to the facility. Since 2006 he has been marketing director for Graphic Arts. As might be expected, nearly 75% of the... (read more)
2008-05-17 12:00:00

Pushing Lidar to the Limits

High-resolution Bathymetric Lidar from Slow-flying Aircraft
Airborne bathymetric Lidar is an ideal tool to study underwater features in the usually rather clear waters along the coast of Australia. Due to the remoteness of many of the continent’s coastlines, this is often the only economically viable option for large-scale bathymetric mapping at high resolution. A new toolkit consisting of two airborne Lidar systems flown on a small and slow-flying research motorglider was trialled in NW Western Australia. The same technology will be used over the next three years in the context of a comprehensive study of submerged archaeological landscapes of the so-called ’Sea Country’, more than 1,000km... (read more)
2017-02-06 09:15:23

Multi-dimensional Cadastre: 3D and 4D

3D Data for Environmentally and Energetically Relevant Topics
In recent years, Germany's national mapping and cadastre information systems have become increasingly focused on demands for multidimensional applications, e.g. environmental protection, planning, energy supply and disaster management. The basic request of coverage and actuality was previously defined for the third dimension. In 2009, the Surveying Authorities of the States of the Federal Republic of Germany (AdV) arrived at the following decision: “The collection, data modelling and quality management of buildings for geotopographical surveying and for the cadastre are main tasks of the official German cadastre. This also includes the third dimension.” The fourth dimension (time) is now an integral component of the... (read more)
2015-12-03 11:32:42

Sustaining Infrastructure

Sustainability was the key word at this year’s Bentley Conference, expressed not only by its theme, ‘Best Practices for Sustaining Infrastructure’, but also through other initiatives, including the attempt to reduce the company’s carbon footprint by 15% before the end of 2009. The conference took place at the Convention Center in Baltimore, Maryland, US, from 28th to 30th May 2008.<P> To travel through Africa is to learn the meaning of sustaining infrastructure; there, neglected roads make moving from place to place a long and tantalising experience. Bentley chose the theme of sustainability to illustrate how infrastructure is the engine for... (read more)
2008-07-09 12:00:00

Low-cost versus High-end Systems for Automated 3D Data Acquisition

Modelling an Early Mediaeval Ring Fort in Germany
Topographic mapping is a standard surveying task and the instrument of choice used to be a total station. The use of terrestrial laser scanning has become popular over the past decade or more, but today there is a much wider choice of methods for the acquisition of a digital surface model (DSM). For the 3D recording of an early mediaeval ring fort, the use of three modern systems was investigated: a portable (kinematic) laser scanning system, a static terrestrial laser scanning system (TLS) and a photogrammetric unmanned aerial system (UAS). The systems were compared to each other based on the... (read more)
2017-01-09 12:57:53

Mobile Mapping Trends and Insights

Data Analysis by Geomares
Mobile mapping technology is on the rise worldwide. Industry specialist Geomares – publisher of 'GIM International' among other things – has analysed the user data and behaviour of thousands of members of the global geospatial community. This article presents the findings from that analysis, identifying the latest trends and sharing insights into the future outlook for mobile mapping. Recent advances in mobile mapping technology are enabling new capabilities and complementing – or even replacing – traditional survey methods of topographical surveying. Futhermore, widespread investment in city planning and ‘smart city’ projects is expected to further accelerate the adoption of mobile... (read more)
2018-07-05 01:59:36

Protecting Location Privacy Brings Opportunities to the Geosector

Since members of the geosector are well versed in potential applications of geoinformation and its fusion with other data sources, they are best equipped to devise and test technology-based solutions for location privacy-related challenges. That is the opinion of Dara Seidl, a young expert on geoprivacy, who won the first pan-American master’s thesis contest on geoinformation. (By Frédérique Coumans, contributing editor) Dara Seidl was selected by a jury of worldwide experts as the winner of the ‘Prize for the Outstanding Master’s Thesis in Cartography, Geodesy and Geo-Information 2015’ for her thesis titled ‘Striking the Balance: Privacy and Spatial Pattern Preservation... (read more)
2017-01-17 09:23:46

Underscoring Benefits to Humanity

GIM International interviews Orhan Altan
Professor Orhan Altan, recently appointed president of the ISPRS, the international NGO representing more than a hundred nations and regions across the globe, believes the organisation should prioritise environmental monitoring and sustainable development and so contribute to achieving the Millennium Development Goals. International co-operation, says Altan, for advancement of knowledge, research, development and education in this field, would be boosted by greater publicity for ISPRS scientific achievements and successes and their translation into universally understood language. We asked him about his expectations and dreams as head of one of the most important bodies in the geomatics industry, and the legacy... (read more)
2009-02-27 12:00:00
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