LSU Center for GeoInformatics

Learn More

Directors Introduction

Welcome to the LSU Center for GeoInformatics (C4G) and Louisiana Spatial Reference Center (LSRC).

Read Directors Message

Get CORS DATA Directly from C4G

Access data from the entire network of GULFNet Continuously Operating Reference Station (CORS) directly from C4G

Learn More ->

GPS on BenchMarks

Help NGS improve the NSRS in Louisiana by participating in a GPS on Bench Marks Campaign today!

Learn More ->

C4G Gravity Research

Supporting NSRS Modernization

Learn More

Reference Network

C4G Operates a CORS Reference Network across Louisiana With CORS – GPS users can access the National Spatial Reference System anywhere in Louisiana with confidence. Think of CORS as “smart benchmarks”. CORS are actively monitored and remain accurate into the future without costly re-observations.

"Last week I was in Lake Charles down to Cameron, this week I've been from Belle Chase to New Orleans and today in north of Baton Rouge. This system has worked flawlessly. Yesterday was a 13000 point topo on a levee and today I'm shooting single geo borings, this would have been a 4-5 day job the old RTK way."

Kimble Slaton PS, UAV

"The customer service that you provided was excellent. You provided all of the necessary connection data in a timely manner. When my survey crew arrived on our site in New Orleans they were able to connect without any problems. I had them check into two NGS monuments and the accuracy results were within our tolerance. I have to say our experience using your network was excellent and I would definitely recommend it to other surveyors."

Roger Dawson Survey Director -TRC

“It’s a no-brainer! You get the increased efficiencies and confidence for a fraction of the cost of even an entry-level field hand. It doesn’t take much business sense to figure that one out.”

Carl Jeansonne, PLS Professional Land Surveyor

Ben Fernandez

Rockabilly Rebel

The Bedlamville Triflers

Ben Fernandez surveys Gravity, Deflection of Vertical and GPS on Benchmarks by day (often nights) but since 2008 he has been a band mate of a group called The Bedlamville Triflers! In pursuit of this passion he has been playing a mix of old-school rockabilly, surf, and a bit of country AND western. The music is steeped in the sounds of Louisiana and it's musical heritage. To learn more visit their Facebook Page @ https://www.facebook.com/TheTriflers

Geaux Cat Geaux

+ C4G

The LSU Center for GeoInformatics is home to the LSRC, GULFnet and the C4Gnet.XYZ Real-Time Network.

+ LSRC

Louisiana Spatial Reference Center was formed as a partnership in cooperation with NOAA’s National Geodetic Survey (NGS), focused on creating state-of-the-art positional infrastructure for the state of Louisiana and to provide technical leadership, training and access to positional data.

+ CORS

Continiously Operating Reference Stations are ground stations that collect positions of GNSS satellites over 12 thousand miles away in space and log these data every second.

+ GULFnet

Access to all GULFNet CORS data in our repository is available freely to the public through C4G in its role as the LSRC and partnerships with members of the Gulf Coast Spatial Reference Consortium (GCSRC).

+ C4Gnet.XYZ

Louisiana's Statewide Real-Time Network that gives clients NSRS positions without the need to setup a base station.

What We Do At C4G

Take a Peek Behind the Curtin and see what we have Accomplished at C4G.

Study of Gravity

C4G Measures Absolute and Relative Terrestrial Gravity

Learn more ->

Outreach

All C4G Outreach Events are Recorded and Archived on YouTube so you can view on demand. Topics cover NSRS, Height Modernization, Remote Sensing, Surveying, GNSS, Real-Time Networks and more...

Learn more ->

Real Time Network Portal

Our RTN portal supports users of C4Gnet.XYZ and also provides access to our free statewide Online Processing service .

Learn more ->

Looking for Real-Time Corrections?

C4G is the host of C4Gnet.XYZ, Louisiana's Statewide Reference Network.

Visit our Web Store to Subscribe

or simply call us at
(225) 328-8976

C4Gnet.XYZ Real Time Network Status Messages

Current Status Messages in all regions

Information in Region C4Gnet Statewide North LA subnet

Subject	Start Date	End Date
CSTA Station Upgrades!	5/15/2024	8/1/2024
CSTA in Coushatta, LA, has been upgraded to an Alloy receiver and Zephyr Geodetic 3 GNSS antenna. These upgrades support all the latest satellite constellations, including BeiDou satellites.

Warning in Region C4Gnet Statewide

Subject	Start Date	End Date
Solar Cycle 25	4/10/2024	5/17/2026
We are approaching the peak years of the latest solar cycle (the 25th since the phenomenon was tracked), which will peak in 2025. During this period, space weather events like solar flares and coronal mass ejections (CME) will occur. During such events that can last one or more days, you may experience long fix times, inability to fix, or high residuals. Note that such events are not frequent; we’ve only had a handful over the past 20 years. However, if you are experiencing such field difficulties, space weather could be a contributing factor. Read more about this on our space weather page, which can be found here: https://c4g.lsu.edu/index.php/rtn/space-weather-gps. We have added links to our http://C4Gnet.XYZ website that allow you to see the locally derived ionosphere Index (I95) and the predicted ionospheric/geometric errors, which indicate the estimated impact you could expect in a rover measurement. The I95 represents current conditions. If you see the index in the red for one or more hours, you might experience the effects noted above. Here is a link to the NOAA Space Weather Prediction 3-day Forecast: https://www.swpc.noaa.gov/products/3-day-forecast The forecast is expressed as Kp Index. If you see a Kp of 6+, then you might experience the effects noted above. By looking at current Kp values, and the locally derived I95, you can get a sense of what to expect.

Information in Region C4Gnet Statewide North LA subnet

Subject	Start Date	End Date
WINF Station Upgrades!	5/21/2024	8/21/2024
WINF in Winnfield, LA, has been upgraded to an Alloy receiver and Zephyr Geodetic 3 GNSS antenna. These upgrades support all the latest satellite constellations, including BeiDou satellites.

Information in Region North LA subnet

Subject	Start Date	End Date
HOMR CORS Added	5/30/2024	10/31/2024
A New CORS was installed at Homer High School with the Station ID of HOMR. The raw data is available on http://CORS.LSU.EDU, and it is now part of the C4Gnet.XYZ Real-Time Network.

Alert in Region C4Gnet Statewide

Subject	Start Date	End Date
RTX clocks and orbits outage (resolved)	7/19/2024	8/1/2024
We were facing severe issues with our RTX service that provides the clocks and orbits for our PPP mountpoints resulting in an availability issue on some mountpoints. The VRS mountpoints were not impacted by this as they use different methods to process the raw GNSS data. Trimble's Advanced Positioning team worked to resolve these issues that were related to the Crowdstrike deployed update that crashed Windows systems worldwide. This issue started 19.07.2024 around 04:30am UTC and was resolved by 19.07.2024 05:54am UTC.