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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B6. Istanbul 2004
York, 2003 (1) : 1 - S. 922-926 - (Lecture Notes in Computer
Science)
7. THE NATIONAL LAND SURVEY OF SWEDEN
7.1 Organisation
The National Land Survey of Sweden, originating from 1628, is
a Government agency under the Ministry of the Environment.
The mission is to give support for creating an efficient and
sustainable use of Sweden's real property, land and water. The
organisation has three main activities, which also form the
organisational structure: Cadastral services, Land and
Geographic Information Services, and Metria (working on a
competitive, commercial basis). Support for these activities is
provided by corporate functions. Swedesurvey is the overseas
agency of the National Land Survey of Sweden. The
headquarter is situated in Givle with a total staff amount of
2,000.
7.2 Land and Geographic Information Services
This activity, which is carried out at the central office,
comprises responsibility for gathering, administering and
making available basic land-related data, geoinformation and
information on Sweden's 3.2 million real properties. It includes
basic geographical databanks, the series of official maps
(printed and on CD), information from geodetic and aerial
photo archives, the land data bank system, central registers of
buildings, apartments and address as well as the credit market
(mortgage) system. The responsibility for all kinds of basic
information services lies on the division archives, registers,
maps, databases but the division has no production resources.
The division works out the technical specifications needed and
purchases the production from Metria (the commercial
department) or from other providers. The division also holds the
competence for | development concerning geodesy,
photogrammetry, cartography and geographic information
systems.
Lantmiteriet are continuously covering Sweden with aerial
images. Images are acquired from an altitude of 4600 meters
with colour, near-infrared and black/white sensitive film. The
ambition - a complete digital photogrammetric production - has
formed the development and production activities for several
years.
The scanning of positive film has been minimised of
economical and environmental reasons. Next alternative,
scanning directly from negative film rolls requires tonal
adjustment, earlier manually performed. Lantmäteriet uses in-
house developed softwares for tonal adjustment as well as
image quality control.
In next phase digital images will be acquired by a digital
camera, Digital Mapping Camera, produced and marketed by
Z/l Imaging. Test flights from different altitudes will be
performed and evaluated during the summer of 2004. A
consequence of digital registrations, without any hard-copies, is
the increased requirement of storage capacity. An investigation
of these demands is also included in the evaluation of the
complete digital production chain.
Sweden is covered by a digital elevation model, grid size 50
meter, accuracy rms > 2 m. The DEM, produced to meet earlier
ortho photo requirements, need to be updated. Laser scanning
from an altitude of 2000 meter, and covering an area of 625
km?, will be processed and evaluated during 2004. The major
topic to solve is the integration of vector data in the filtering
and classification processes, which also leads to harmonised
267
data sets. Requirements of production time, costs and accuracy
will probably form areas with different quality demands and
acquisition techniques.
7.3 Metria
Metria carries out its services on contract and operates on the
national and international markets. Metria has a total staff of
400 of which more then 100 are working with EO- and GIS-
related tasks.
Metria is a distributor of satellite imagery from all the
commercially available sensors; i.e. EROS, IKONOS, SPOT,
Landsat, IRS, Radarsat and ERS. During 2003 Metria
concluded the Swedish CORINE Land Cover mapping
including a national product with 1-5 hectares minimum
mapping unit. Metria is a partner in four GMES Service
Element, GSE, which was started in 2003. These are GSE
Forest Monitoring, which focus on the Kyoto reporting and
national forest legislations, GSE SAGE that focus on
information requirements for the water framework directive,
GSE RISK-EOS which include services for risk management
such as flooding or forest fires and RESPOND focusing on
information services for humanitarian aid.
Late in 2003 a project within the ESA EOMD program also was
concluded. It focused on medium-scale mapping services for
watershed monitoring by using ENVISAT MERIS satellite
data.
Metria has been a partner within the Global Land Cover 2000
project, which was concluded during 2003, in which Metria was
responsible for the land cover classification of the Baltic Sea
drainage basin.
Metria has during 2003 carried out nine development projects
together with Swedish users within the Swedish National Space
Board’s program for remote sensing applications, within areas
such as environment, forestry and security. Metria has also
carried out several mapping projects using remote sensing on
contract from Swedish users such as the Swedish
Environmental Protection Agency, the Swedish Board of
Agriculture and the Swedish Nuclear Power Inspectorate.
Metria has been the programme manager for the large Remote
Sensing for the Environment (RESE) programme, which was
concluded during 2003 after six years. About 60 researchers
from the major Swedish remote sensing institutions have been
involved in the program. The RESE program has focused on the
development of remote sensing methodology for environmental
purposes, ranging from the marine environment to the
mountainous areas.
7.4 Address
Lantmáteriet
SE-801 82 Gávle Sweden
Home page: www.lantmateriet.se
8. SWEDISH NATIONAL ROAD ADMINISTRATION -
SNRA
8.1 Organisation
The SNRA is the national authority assigned the overall
sectoral responsibility for the entire road transport system. The
SNRA is also responsible for drawing up and applying road
transport regulations. In addition, the SNRA is responsible for
the planning, construction, operation and maintenance of the
state roads.
