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LSU’s College of Engineering created the Center for GeoInformatics (C4G) to build new research and services in Geodesy and GeoInformatics.

LSU Center for GeoInformatics(C4G) in partnership with the Space & Earth Geodetic Analysis Laboratory (SEGAL) at the Universidade de Beira Interior (UBI) and Instituto Dom Luis (IDL), Portugal will provides a framework for advancing geodetic analysis and modeling. Combining the skills and experiences from these of capable and motivated partners will lead to new opportunities that were previously inaccessible. 

The partners will collaboratively pursue research and support for the precise point positioning of GPS/GNSS data, gravimetric geoid modeling, and the application of emerging geo-informatics technologies and services. C4G and SEGAL will develop new tools for analyzing Global Navigation and Satellite Systems (GNSS) data. Long term collaboration will also advance the development of a new gravimetric geoid model for Louisiana.

 “Subsidence is a leading cause, if not the principal driver of wetlands losses in Louisiana,” 
- C4G researcher Joshua Kent.

 Louisiana’s coastal wetlands are lost at nearly one football field every hour.” 
- U.S. Geological Survey

“Gravimetric surveys conducted by the C4G will ultimately allow us to re-connect with the geoid to calculate better elevations" and “knowing how high we are above sea level.”
-  C4G geodesist Cliff Mugnier.

“We have applied our in-house developed software in the computation of regional and national geoid projects in North Mozambique, Madeira and more recently in Bhutan.”
- Machiel Bos, SEGAL researcher

 “This collaboration is a unique opportunity to partner with a very enthusiastic team that combines pure and applied research in several areas of geosciences with enormous societal implications,”
- Rui Fernandes, of SEGAL.

“I anticipate significant innovation from our relationship.”
- George Z. Voyiadjis, Boyd Professor and Director of C4G

Download the Official Press Release for detailed information HERE

C4GNet RTN Automatic Rover Fail Over System!

In an effort to deliver the most robust Real Time Network end user experience, C4G has implemented a redundant system of Global Load Balancers that automatically switch RTN users over to the equipment providing the best quality of service. C4G has maintained primary and backup servers for years but end users have always had to switch the hostname manually in their rover settings. With the new Always On redundant global load balancing system a rover simply needs to set the RTN hostname to RTN.LSU.EDU and the LSU DNS servers will direct the connection to the primary or secondary global load balancer based on weighting and availability. The global load balancers continuously monitor the quality of service at the NTRIP servers and pass the rover off to the primary or secondary NTRIP server based on quality of service and availability. The RTN Always On system is currently online and C4G encourages all clients that want to take advantage of this new improved fail-over feature to switch their host address from to RTN.LSU.EDU to take advantage of the robustness of C4GNet's Always On RTN


Note that the LSU Center for GeoInformatics is actively pursuing the funding necessary to do the control work needed to create better GEOID models in Louisiana. Feeding well distributed vertical control data into future GEOID models will improve the vertical accuracy of these models and is perhaps our only hope of ever creating a ±2cm GEOID in the state of Louisiana.

The NGS presentation on Friday March 15, 2013, pointed out that GEOID12a produces 95% confidence at ± 4 to 8 cm in Louisiana. The NGS conclusion states that the problem is too large for NGS to handle alone and we all need to work together to get better height results. They also recommend partnering with locals to leverage existing resources and that a plan needed to be created to move forward with improving heights.

NGS plot shows GEOID12a produces 95% confidence at ± 4 to 8 cm in Louisiana

The presentation was given by NGS geodesists / scientists, Michael Dennis and Dan Roman.

  • Michael Dennis was the recent project manager for the new adjustment to the North American Datum of 1983, NAD 83 (2011), and performed the S. LA project vertical adjustment.
  • Dan Roman is the head of research and development of geoid models at NGS.

Big picture ideas to consider from the presentation

  • Short term possibilities (through ~2015)
    • Extend 2009 MS leveling into and across LA
    • Establish GNSS infrastructure to monitor subsidence
    • New ~2015 GNSS Height Mod survey (gives 10-year delta time)
  • Medium term (~2016-2022)
    • Terrestrial gravity surveys
    • Incorporate GRAV-D aerial gravity into geoid model for region
  • Long term (~2022)
    • New vertical datum based on gravimetric geoid

Recently, NOAA’s National Geodetic Survey released updated orthometric heights for Southern Louisiana relative to the September 2010 GNSS Height Modernization project. These heights represent the most up to date heights available for the region. On March 15, 2013, NGS hosted a free, on-line webinar to present the results of this project.


Visit the NGS page for this event

To download the .mp4 file, click here.

Link to the presentation:

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LSU Remains Committed to the Success and Expansion of C4G

LSU Remains Committed to the Success and Expansion of C4G LSU Remains Committed to the Success and Expansion of C4G
  In 2001, LSU’s College of Engineering created a Center for GeoInformatics (C4G) to build new...

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Center for GeoInformatics
101 LSU Student Union Building
LSU Box #25413
Baton Rouge, LA 70803

Our Location

Louisiana State University
Eng. Research & Development Bldg.
Room 200, 2nd Floor
South Stadium Drive

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Cliff 225.578.4578
Randy 225.578.4609
Josh 225.578.5260
Larry 225.578.8925