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Latest Satellite geodesy Stories

Sentinel-1
2014-08-27 04:00:58

European Space Agency Although it was only launched a few months ago and is still being commissioned, the new Sentinel-1A radar satellite has already shown that it can be used to generate 3D models of Earth’s surface and will be able to closely monitor land and ice surface deformation. As the first in a fleet of satellite missions for Europe’s Copernicus environmental monitoring program, Sentinel-1A was launched on 3 April. It carries an advanced radar instrument to image Earth’s...

Lifetime Of Gravity Measurements Brings New Beginning
2014-08-01 03:08:45

ESA Although ESA’s GOCE satellite is no more, all of the measurements it gathered during its life skirting the fringes our atmosphere, including the very last as it drifted slowly back to Earth, have been drawn together to offer new opportunities for science. Carrying the first 3D gravity sensor in space, this state-of-the-art satellite measured Earth’s gravity with unprecedented accuracy. GOCE’s four years in orbit resulted in a series of four gravity models, each more...

GOCE Mission Comes To An End
2013-10-22 13:11:50

Lee Rannals for redOrbit.com - Your Universe Online The European Space Agency (ESA) announced on Monday its Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) mission has come to an end. ESA said that after mapping the Earth's gravity for four years the satellite has finally run out of fuel, effectively ending the mission. GOCE's gradiometer instrument was the first of its kind in space and it helped to map variations in Earth's gravity with unrivaled precision. GOCE...

GOCE’s Second Mission To Improve Gravity Map
2012-11-16 12:22:31

ESA ESA´s GOCE gravity satellite has already delivered the most accurate gravity map of Earth, but its orbit is now being lowered in order to obtain even better results. The Gravity field and steady-state Ocean Circulation Explorer (GOCE) has been orbiting Earth since March 2009, reaching its ambitious objective to map our planet´s gravity with unrivalled precision. Although the planned mission has been completed, the fuel consumption was much lower than anticipated because...

Image 1 - NASA Pinning Down 'Here' Better Than Ever
2012-02-25 05:16:20

Before our Global Positioning System (GPS) navigation devices can tell us where we are, the satellites that make up the GPS need to know exactly where they are. For that, they rely on a network of sites that serve as "you are here" signs planted throughout the world. The catch is, the sites don't sit still because they're on a planet that isn't at rest, yet modern measurements require more and more accuracy in pinpointing where "here" is. To meet this need, NASA is helping to lead an...

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2007-08-01 17:14:48

How high is Mount Everest exactly? Recent surveys have come up with heights that differ by more than five metres. An expedition called the Geodetic Journey is making its way through China and Tibet to highlight the importance of geodesy and how an accurate model of the geoid from ESA's GOCE mission will lead to a unified system for measuring heights. Geodesy is concerned with measuring and mapping the shape of the Earth's surface, to the benefit of all branches of Earth sciences and has many...


Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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