Embed Size (px)
DESCRIPTION
The Terrestrial Reference Frame by NASA Presented to CGMS-41 Working Group II, WGII/10 Richard S. Gross NASA Jet Propulsion Laboratory. What is the Terrestrial Reference Frame?. - PowerPoint PPT Presentation
Citation preview
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMSCoordination Group for Meteorological Satellites - CGMS
The Terrestrial Reference Frame by NASA
Presented to CGMS-41 Working Group II, WGII/10
Richard S. GrossNASA Jet Propulsion Laboratory
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
The Terrestrial Reference Frame (TRF) is an accurate, stable set of positions and velocities of reference points on the surface of the Earth
The TRF provides the stable coordinate system that allows us to link measurements over space and time
The geodetic networks provide data for determination of the TRF as well as direct science observations
GNSS, SLR, VLBI, and DORIS are the four technologies used in the geodetic networks
GNSS SLR
VLBI
DORIS
What is the Terrestrial Reference Frame?
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
Design error at bridge construction in Laufenburg (2003): During the construction of the bridge across the Rhine river in Laufenburg, a control showed that a height difference of 54 centimeters exists between the bridge built from the Swiss side and the roadway of the German side. Reason of the error is the fact that the horizons of the German and Swiss side are based on different reference frames. Germany refers to the sea level of the North Sea, Switzerland to the Mediterranean.
An Inaccurate Reference Frame Can Be Very Expensive
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
The GGOS Geodetic Reference Frame Requirement for Sea Level Measurement1 mm reference frame accuracy and 0.1 mm/yr stability
Improving the performance of the Global Geodetic Observing System and the TRF is critical to understanding the future impact of Sea level Change
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
GGOS2020 recommends the development of a NextGen Network of co-located fundamental stations
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
NASA (GSFC/JPL) is Developing a Prototype Next Generation Geodetic Observatory at GSFC
NASA, CGMS-41, July 2013
Coordination Group for Meteorological Satellites - CGMS
International Contributions are Essential to Develop the Next Generation GGOS Network
