Operating Instructions

St. Clair County CORS Network Data Formats:

Real-Time Data Outputs

All real-time data outputs via cell phone or CDPD from the St. Clair county CORS Network is RTCM-104 Version 2.2 and is broadcast at a 1 second rate.

Cell Phone Dialup Numbers

All of the St. Clair County stations are also accessible with the use of a CDPD (Cellular Digital Packet Data) modem. The service for St. Clair County is available via a mobile IP (internet provider) access number provided by Cingular Wireless. The Cingular Wireless contact number for procuring a mobile IP address is Gordon Degener at (586) 506-0000.

It should be noted that St. Clair County is serviced by the following CDPD towers:

• Capac
• Richmond
• Port Huron
• Marine City
• St. Clair

Effective range on these towers is approximately five (5) miles.

Post-Processing Outputs

The data from the St. Clair County CORS Network is available for post processing from the Michigan Department of Transportation web site at www.MICHCORS.com. This data is at a one second rate and available in RINEX (International Receiver Exchange Format).

In addition, collected field observations can be automatically processed with the NGS (National Geodetic Survey) OPUS (Online Processing User Service). All of the St. Clair County stations are included in the ITRF (International Terrestrial Reference Framework). OPUS can be accessed through the National Geodetic Survey website at: www.NGS.NOAA.gov.

For information regarding the configuration of the Leica SR530 for cell phone or CDPD communication please contact: Rick Sauve, Leica Geosystems, Inc. at (313) 670-3395.