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19 novembre 2018
- doi: 10.4000/books.irdeditions.25541
- isbn: 9782709915847
- eisbn: 9782709924900
https://www.openedition.org/12554 , info:eu-repo/semantics/openAccess
Sujets proches
Frontier troubles Navigation Satellite Timing and Ranging Global Positioning System NAVSTAR GPS GNSS (Navigational system) GPS (Navigational system) Global Navigation Satellite System 20th century 1900s (Century) Nineteen hundreds (Century) Sidereal system Moons Planets--Satellites Planetary satellites Natural satellites Oceanography, Physical Physical oceanography Thalassography Oceanology Annals Navigators Voyagers DiscoverersCiter ce document
George Philander, « Preface », IRD Éditions, ID : 10.4000/books.irdeditions.25541
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Résumé
The second half of the 20th century was a most remarkable period in the history of oceanography. In the 1980’s oceanographers were still determining the position of a ship at sea by means of stars and sextants, the instruments of explorers, of individualists who brave the elements and venture into uncharted territory in search of new worlds. Today it is possible to locate a ship very accurately by means of the Global Positioning System, (GPS) which depends on several satellites in space. How ...