"Geodesy is the science of measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D."
The science of measuring and representing the Earth's surface and its gravitational field, including datum systems, coordinate systems, and map scales.
Coordinate systems: Coordinate systems are the basis of geodesy. They define the position of points on the Earth's surface in space.
Geodetic datums: Geodetic datums provide a basis for measuring the Earth. They define the shape, orientation, and position of the Earth relative to other objects.
Map projections: Map projections are mathematical algorithms that transform a three-dimensional full-scale model of the Earth onto a two-dimensional map.
Geographic Information Systems (GIS): GIS is a computer-based system that allows for the storage, analysis, and manipulation of geographical data.
Remote sensing: Remote sensing provides a method of acquiring data about the Earth's surface from a distance, using imagery and other methods of data collection.
Global Navigation Satellite Systems (GNSS): GNSS provides precise positioning, velocity, and timing data to users worldwide.
Geoid models: The geoid is the shape that the Earth's surface would take if it were covered by water. There are various geoid models widely used in geodesy.
Height systems: Height systems define the elevation of a point relative to a reference surface or datum, such as mean sea level.
Surveying techniques: Surveying techniques provide the means to measure distances, angles, and heights accurately to locate points on the Earth's surface.
Mathematical modeling: Mathematical modeling provides a powerful tool for predicting and analyzing the Earth's behavior, such as gravity field variations and deformations.
Physical Geodesy: It involves the study of the physical properties of the Earth's gravitational field, its shape, and its rotation.
Satellite Geodesy: It employs satellite observations of the Earth's shape, gravity, and rotation for making precise measurements and maps.
GPS Geodesy: It is a technique that uses Global Positioning System (GPS) satellite technology to obtain accurate coordinates and heights of points on Earth's surface.
Geodynamic Geodesy: It involves the analysis of long-term and short-term geological movements and deformations of the Earth's crust.
Geoid Geodesy: It is a technique for determining the shape of the Earth's gravity field by measuring the gravity acceleration at different points on the surface of the earth.
Terrestrial Geodesy: It involves the collection and analysis of data on the shape, size, and orientation of the Earth's surface from terrestrial (e.g., ground-based) observations.
Photogrammetry: It is a technique for obtaining measurements and maps using photographs taken from the air, satellite, or ground.
Cartography: It is the science and art of making maps, charts, and diagrams using geodetic data.
Surveying: It is the measurement and mapping of land, water, and other natural and man-made features on the Earth's surface.
LiDAR (Light Detection and Ranging): It is a remote sensing technology that uses laser beams to measure the distance to the Earth's surface, producing highly detailed elevation models.
Digital Mapping: It involves the creation and display of digital maps using geospatial data and computer software.
Remote Sensing: It refers to the collection of data about the Earth's surface using sensors on aircraft or satellites.
Geomorphometry: It is the quantification of topographical surface properties to support terrain analysis and mapping applications.
Geospatial Data Analysis: It involves the use of statistical and computational methods to extract, analyze, and map geospatial data.
Geospatial Modeling: It involves the creation of models that simulate the behavior of physical systems and natural processes on Earth's surface.
Geovisualization: It refers to the presentation of geospatial information in visual and interactive ways to support communication, decision-making, and exploration.
GIS Planning: It involves the use of GIS information and tools to plan and manage land use, infrastructure, and resources.
Geodatabase Design: It involves creating and maintaining databases that store geospatial data and support GIS analysis, visualization, and dissemination.
"It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems."
"Geodynamical phenomena, including crustal motion, tides, and polar motion, can be studied by designing global and national control networks..."
"Geodynamical phenomena, including crustal motion, tides, and polar motion, can be studied by designing global and national control networks..."
"...applying space geodesy and terrestrial geodetic techniques..."
"The job titles are geodesist and geodetic surveyor."
"...measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D."
"Measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D."
"It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems."
"Applying space geodesy and terrestrial geodetic techniques..."
"...studying geodynamical phenomena, including crustal motion, tides, and polar motion, by designing global and national control networks..."
"Geodynamical phenomena, including crustal motion, tides, and polar motion, can be studied..."
"The job titles are geodesist and geodetic surveyor."
"...measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D."
"The science of measuring and representing the geometry, gravity, and spatial orientation of the Earth..."
"...geodynamical phenomena, including crustal motion, tides, and polar motion, by designing global and national control networks, applying space geodesy..."
"Geodynamical phenomena, including crustal motion, tides, and polar motion..."
"...relying on datums and coordinate systems."
"It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems."
"...measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D."