Zusammenfassungen in deutscher
Sprache:
three main problems are accented, namely the purpose,
the decisions and the organization.
Review of surveying in the Netherlands
by prof. dr. ir. M.J.M. Bogaerts (p. 208).
In this short introduction a survey is given of the most
important developments in geodesy in the Netherlands.
Special attention is paid to education and research.
Activities of the Cadastre in the Netherlands I
Towards a multi-purpose Cadastre
by ir. J. Polman (p. 210).
The Cadastral Service started 150 years ago with the
administration of land property for a fair levy of land
taxes. This administration quickly developed into a ca
dastral system for protection of real rights in respect of
real estate and for supply of cadastral information for
different purposes.
In the course of the years the Cadastral Service acquired
a number of new tasks, such as:
-keeping the national triangulation network up-to-da
te;
- contributing to land consolidation projects;
- renewal of cadastral maps;
- production of large scale basic maps.
In the near future, the Cadastral Service will play an
important role in the supply of land information in order
to meet the growing demand for such information on
behalf of several government tasks.
Activities of the Cadastre in the Netherlands II
Rural land development
by ir. J.K.B. Sonnenberg (p. 213).
Since 1925 the Cadastre in the Netherlands has been
closely involved in rural land development (previously
called land-consolidation). The most important task of
the Cadastre in this field is to draw up the re-allocation
plans for the rural land development projects.
According to the policy of the Minister of Agriculture
and Fisheries, who is responsible for rural land develop
ment, projects covering in all an area of 40 000 hectares
come into execution each year. Land-consolidation has
been completed for an area of 800000 hectares. For an
area of 920 000 hectares, the preparation or execution of
rural land development is in operation. It is foreseen that
another 700000 hectares of the rural area need to be
developed.
The new rural land development act is expected to come
into force in 1983. This act will replace the current Land-
consolidation Act of 1954.
In respect of its rural land development activities the
Cadastre has developed some automated systems. The
land-information system and the re-allocation system
are the most important of these systems.
Activities of the International Institute for Aerial Survey
and Earth Sciences (ITC)
by prof. ir. L. vanZuijlen (p. 216).
The International Institute for Aerial Survey and Earth
Sciences (ITC) in Enschede and Delft in the Netherlands
has three objectives: education, research and consulta
tion. After a historical introduction the various fields of
study of the ITC are described in short as is also the
consulting task of the Institute.
The ITC has as central theme the application of the aerial
photo and other remote sensing techniques on photo-
grammetry, cartography, aerial photography, geology,
NGT GEODESIA 82
geomorphology, soil survey, forestry, urban surveys,
integrated surveys, rural surveys, and vegetation map
ping.
Consulting has been and is still given in more than 200
projects over the world.
Activities of the Meetkundige Dienst (Survey Depart
ment) of the Rijkswaterstaat
by ir. R. Vel/ema (p. 223).
The „Meetkundige Dienst" is one of the many depart
ments of the Rijkswaterstaat, belonging to the Ministry
of Transport and Public Works.
The production of technical detailed maps is one of the
main duties of the Meetkundige Dienst. In view of its
tasks, the Rijkswaterstaat needs many technical maps of
various kinds, such as basic maps (for designing new
works, such as roads or canals), maps for management
purposes, coastal maps and maps of riverbanks, river-
maps, vegetation maps, position fixing patterns etc.
Furthermore, the department is in charge of
- the maintenance of the network of NAP benchmarks;
- providing geodetic assistance to the Rijkswaterstaat;
- research, adorsing and supplying information regard
ing geodetic problems at the sea and in rivers (marine
geodesy);
- managing and maintaining radio location systems;
- the central management of surveying instruments
used by the Rijkswaterstaat;
- research, advising and supplying information regard
ing modern aerial and underwater observation techni
ques (e.g. remote sensing).
The Meetkundige Dienst uses the most modern pieces
of apparatus.
Based on some examples the activities are described
more in detail.
Surveying and mapping activities of private companies
in the Netherlands
by ir. G. Jacobs (p. 227).
In the lecture, an idea is given of the activities of Dutch
private companies in the field of surveying and map
ping.
To start with an estimation is given of the total amount
of money spent on making and updating maps and
related activities in the Netherlands at the moment.
Then it is deduced which part of this amount is turned
out by private companies.
After a discourse on the present market situation, the
lecture terminates with a global review of the activities
in which private companies participate.
Internationale Entwicklungen auf dem Gebiet der Land-
informationssysteme
von prof. dr. ir. M.J.M. Bogaerts (p. 195).
In diesem Bericht werden die Entwicklungen auf dem
Gebiet der Landinformationssysteme beschrieben. Be-
sonders handelt es sich dabei um die Entwicklung der
Theorie, der Anwendung der Landinformationssysteme
und um neue Methoden für die Erfassung, Verarbeitung
und Verwaltung bodenbezogener Daten.
Internationale Entwicklungen der Mathematischen
Geodasie
von prof. ir. J. van Mierlo (p. 199).
In diesem Beitrag werden einige Aspekte der Mathema-
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