Concrete Pillar Monuments 
Building Mount Monuments (click to enlarge)
The Wisconsin Department of Transportation is developing a comprehensive Wisconsin Continuously Operating Reference Stations (WISCORS) network in the easterly portion of Wisconsin defined by the area east of a line from Beloit – Madison – Beaver Dam – Winneconne – Shawano – Suring – Wausaukee – Marinette. WISCORS has been established (with the exception of Madison and Janesville…working on agreements) at each location as listed in the table.
The plan is to have the system operational by May of 2008 if no major issues develop. Initially no charge will be requested to access the system, however in the near future a yearly charge (possibly $500) might be implemented to cover maintenance of the system.
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Current status of the WISCORS is as follows:
- 23 of the initial 25 sites have been constructed with GPS receivers installed and streaming data to Trimble’s Ilab.
- WisDOT has constructed a similar IT structure to handle CORS operation.
- WisDOT is in the process of developing web site for WISCORS.
- Some testing has been performed to determine cell coverage.
- Issues to be completed before system is operational:
- Moving data streams on WisDOT servers.
- Resolving of data communication at one site.
- Resolving some multipath issues on several building mount locations.
- Testing of system within WisDOT IT.
- Determining coordinate values of CORS sites.
- Training of WisDOT staff on the operation and maintenance of system.
- Complete agreements with remaining sites.
- Establish a user sign-up procedure.
| Location (Station Name) | Partner | Monument Type |
| Franklin (SIWI) | Seiler Instrument | Pillar |
| Walworth (WATH) | Big Foot High School | Building Mount |
| Kenosha (KEHA) | Kenosha Unified School District | Building Mount |
| Brookfield (NSE1) | National Survey and Engineering | Building Mount |
| West Bend (WEBE) | City of West Bend | Pillar |
| Palmyra (PARA) | Palmyra - Eagle Area School District | Building Mount |
| Watertown (WAWN) | City of Watertown | Pillar |
| Janesville (JALE) | City of Janesville (proposed) | Building Mount |
| Madison (MAON) | City of Madison (proposed) | Building Mount |
| Beaver Dam (BEDA) | City of Beaver Dam | Pillar |
| Fond du Lac (FOLA) | City of Fond du Lac | Pillar |
| De Pere (DERE) | City of De Pere, Brown County | Pillar |
| Wausaukee (WAEE) | Village of Wausaukee | Pillar |
| Suring (SUNG) | Oconto County | Building Mount |
| Marinette (MATE) | NWTC | Building Mount |
| Sister Bay (SIBA) | Village of Sister Bay | Building Mount |
| Sturgeon Bay (STBA) | Door County | Building Mount |
| Abrams (ABMS) | Abrams Sanitary District | Pillar |
| Shawano (SHNO) | Shawano Municipal Utilities | Pillar |
| Shiocton (SHON) | Outagamie County | Building Mount |
| Chilton (CHON) | Fox Valley Technical College | Building Mount |
| Manitowoc (MAOC) | Manitowoc County | Building Mount |
| Kewaunee (KEEE) | City of Kewaunee | Pillar |
| Winneconne (WINE) | Village of Winneconne | Building Mount |
| Sheboygan (SHAN) | City of Sheboygan | Building Mount |
National Geodetic Survey (NGS)
The NGS manages two networks of continuously operating reference stations (CORS), which provides GPS carrier and code range measurements in support of 3-dimentional positioning activities throughout the United States.
National CORS Network
Users can apply CORS data to position points at which GPS data have been collected. The CORS system enables positioning accuracies that approach a few centimeters relative to the National Spatial Reference System, both horizontally and vertically.
Cooperative CORS Network
The Cooperative CORS Network consists of GPS base stations whose data are freely disseminated by cooperating organizations. NGS provides a link from its web site to that cooperating organization, however the site coordinates must be consistent with the National Spatial Reference System.
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