I think it is used for recognising the density of different parts of the earth....
Geodesy measures the various positions and points on the Earth.
the father of Geodesy & Indology is abu rayhan al biruni
Space geodetic methods were brought to geodesy in the 20th century.
W. Baarda has written: 'Linking up spatial models in geodesy extended S-transformations' -- subject(s): Mathematics, Transformations (Mathematics), Geodesy, Nets (Geodesy)
Reino Antero Hirvonen has written: 'Matemaattinen geodesia' -- subject(s): Mathematics, Geodesy 'Adjustment by least squares in geodesy and photogrammetry' -- subject(s): Photogrammetry, Least squares, Geodesy
Some common types of heights in geodesy include ellipsoidal height (measured above or below the reference ellipsoid), orthometric height (measured above or below a geoid model), and dynamic height (used in oceanography to account for variations in sea surface height). Each type of height serves a different purpose based on the specific application in geodesy.
Two disadvantages of geodesy maps are limited detail in terms of topographic features compared to other specialized maps like topographic maps, and potential distortions in size and shape of features due to the projection used in creating the map.
Geodesy is the science of accurately measuring and representing the Earth's shape, orientation in space, and gravitational field. It involves techniques such as GPS, satellite imagery, and ground-based surveys to study the Earth's surface and its variations. Geodesy is important for various applications, including mapping, navigation, and understanding Earth's dynamics.
Cartography or Geodesy .
Thomas Jefferson Lee has written: 'Tables and formulae useful in surveying, geodesy, and practical astronomy' -- subject(s): Tables, Astronomy, Geodesy, Surveying
Geodesy is the science of measuring and understanding the Earth's shape, rotation, and gravitational field. It involves techniques such as satellite imagery, GPS technology, gravity measurements, and remote sensing to accurately determine the size and shape of the Earth. Geodesy is crucial for activities like map making, land surveying, and monitoring movements of the Earth's surface.
J. W. Ryan has written: 'NASA Space Geodesy Program--GSFC data analysis--1992' -- subject(s): Crust, Rotation, Satellite geodesy