# Geomatics

Geodesy :
Fundamentals
Geodesy
Geodynamics
Geomatics
History :
Concepts
Geographical distance
Geoid
Figure of the Earth (radius and circumference)
Geodetic coordinates
Geodetic datum
Geodesic
Horizontal position representation
Latitude / Longitude
Map projection
Reference ellipsoid
Satellite geodesy
Spatial reference system
Spatial relations
Vertical positions :
Technologies
Global Nav. Sat. Systems (GNSSs)
Global Pos. System (GPS)
GLONASS (Russia)
BeiDou (BDS) (China)
Galileo (Europe)
NAVIC (India)
Quasi-Zenith Sat. Sys. (QZSS) (Japan)
Discrete Global Grid and Geocoding :
Standards (history) NGVD 29 Sea Level Datum 1929 OSGB36 Ordnance Survey Great Britain 1936 SK-42 Systema Koordinat 1942 goda ED50 European Datum 1950 SAD69 South American Datum 1969 GRS 80 Geodetic Reference System 1980 ISO 6709 Geographic point coord. 1983 NAD 83 North American Datum 1983 WGS 84 World Geodetic System 1984 NAVD 88 N. American Vertical Datum 1988 ETRS89 European Terrestrial Ref. Sys. 1989 GCJ-02 Chinese obfuscated datum 2002 Geo URI Internet link to a point 2010
International Terrestrial Reference System
Spatial Reference System Identifier (SRID)
Universal Transverse Mercator (UTM) :
vte :
Geomatics is defined in the ISO/TC 211 series of standards as the "discipline concerned with the collection, distribution, storage, analysis, processing, presentation of geographic data or geographic information". Under another definition, it consists of products, services and tools involved in the collection, integration and management of geographic (geospatial) data. Surveying engineering was the widely used name for geomatic(s) engineering in the past. Geomatics was placed by the UNESCO Encyclopedia of Life Support Systems under the branch of technical geography.

## History and etymology

The term was proposed in French ("géomatique") at the end of the 1960s by scientist Bernard Dubuisson to reflect at the time recent changes in the jobs of surveyor and photogrammetrist. The term was first employed in a French Ministry of Public Works memorandum dated 1 June 1971 instituting a "standing committee of geomatics" in the government.
The term was popularised in English by French-Canadian surveyor Michel Paradis in his The little Geodesist that could article, in 1981 and in a keynote address at the centennial congress of the Canadian Institute of Surveying (now known as the Canadian Institute of Geomatics) in April 1982. He claimed that at the end of the 20th century the needs for geographical information would reach a scope without precedent in history and that, in order to address these needs, it was necessary to integrate in a new discipline both the traditional disciplines of land surveying and the new tools and techniques of data capture, manipulation, storage and diffusion.
Geomatics includes the tools and techniques used in land surveying, remote sensing, cartography, geographic information systems (GIS), global navigation satellite systems (GPS, GLONASS, Galileo, BeiDou), photogrammetry, geophysics, geography, and related forms of earth mapping. The term was originally used in Canada but has since been adopted by the International Organization for Standardization, the Royal Institution of Chartered Surveyors, and many other international authorities, although some (especially in the United States) have shown a preference for the term geospatial technology, which may be defined as synonym of "geospatial information and communications technology".
Although many definitions of geomatics, such as the above, appear to encompass the entire discipline relating to geographic information – including geodesy, geographic information systems, remote sensing, satellite navigation, and cartography –, the term is almost exclusively restricted to the perspective of surveying and engineering toward geographic information. Geoinformatics and Geographic information science has been proposed as alternative comprehensive term; however, their popularity is, like geomatics, largely dependent on country.
The related field of hydrogeomatics covers the area associated with surveying work carried out on, above or below the surface of the sea or other areas of water. The older term of hydrographics was considered too specific to the preparation of marine charts, and failed to include the broader concept of positioning or measurements in all marine environments. The use of different data processing technologies in hydrography does not change the purpose of its research.
Health geomatics can improve our understanding of the important relationship between location and health, and thus assist us in Public Health tasks like disease prevention, and also in better healthcare service planning. An important area of research is the use of open data in planning lifesaving activities.
Mining geomatics is the use of information systems to integrate and process spatial data for monitoring, modelling, visualisation and design of mining operations.
A growing number of university departments which were once titled "surveying", "survey engineering" or "topographic science" have re-titled themselves using the terms "geomatics" or "geomatics engineering", while others have switched to program titles such as "spatial information technology", and similar names.
The rapid progress and increased visibility of geomatics since the 1990s has been made possible by advances in computer hardware, computer science, and software engineering, as well as by airborne and space observation remote-sensing technologies.

## Geomatics engineering

Geomatics engineering is a rapidly developing engineering discipline which focuses on spatial information (i.e. information that has a location). The location is the primary factor used to integrate a very wide range of data for spatial analysis and visualization. Geomatics engineers design, develop, and operate systems for collecting and analyzing spatial information about the land, the oceans, natural resources, and manmade features.
Geomatics engineers apply engineering principles to spatial information and implement relational data structures involving measurement sciences, thus using geomatics and acting as spatial information engineers. Geomatics engineers manage local, regional, national and global spatial data infrastructures. Geomatics engineering also involves aspects of Computer Engineering, Software Engineering and Civil Engineering.

## Applications

Application areas include:
* Aeromagnetic surveys
* Airborne geophysics
* Air navigation services
* Archaeological excavation and survey for GIS applications
* Coastal zone management and mapping
* Disaster informatics for disaster risk reduction and response
* The environment
* Infrastructure management
* Land management and reform
* Natural resource monitoring and development
* Seismic Interpretation
* Subdivision planning
* Urban and regional planning
* Oceanography
* Meteorology
* Parks
* Resource Management
* Climate Change/Environmental Monitoring

## Areas of knowledge

Geomatics integrates science and technology from both new and traditional disciplines:
* Geodesy
* Geodynamics
* Global positioning system (GPS) or global navigation satellite system (GNSS)
* Surveying (including land, cadastral, aerial, mining and engineering surveying)
* Hydrography
* Navigation
* Location-based services
* Cartography and digital mapping
* Geographic information systems (GIS), spatial database management and geographic information technology (GeoIT)
* Spatial analysis, spatial data mining and knowledge discovery, and spatial statistics
* Computer-aided design (CAD) and scientific visualization
* Geovisualization, Geovisual Analytics, Visual communication design, graphic design and multimedia technology
* Remote sensing
* Digital Earth
* Image processing
* Photogrammetry
* Computer vision
* Land information systems (LIS)
* Land management, cadastre, real property law
* Applications programming
* Project management
* Land Surveying
* LIDAR
* Digital terrain modelling