Archives
30/04
Contribute by: Joel Bump, Indiana Department of Transportation, Enterprise Data and System Architecture Manager
The Survey Department of the Aerial Engineering Division of the Indiana Department of Transportation coordinates a network of Continuously Operating Reference Stations (CORS). Each CORS site provides Global Navigation Satellite System (GNSS - GPS and GLONASS) carrier phase and code range measurements in support of 3-dimensional positioning activities throughout the state of Indiana.
The Survey Department of the Aerial Engineering Division of the Indiana Department of Transportation coordinates a network of Continuously Operating Reference Stations (CORS). Each CORS site provides Global Navigation Satellite System (GNSS - GPS and GLONASS) carrier phase and code range measurements in support of 3-dimensional positioning activities throughout the state of Indiana.
Surveyors, GIS/LIS professionals, engineers, scientists, and others can apply CORS data to position points at which GNSS 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.
RINEX data in the form of navigation, observation and glonass files are available for each of our sites. The data may be browsed via our FTP site found at: ftp://ftp.incors.in.gov. Files are available for two months from the current date.
Providing a real-time kinematic (RTK) correction service over the internet, and RINEX files for post-processing . End-users don’t have to be a Leica user to enjoy the benefits of INDOT's GNSS. If your GPS or GNSS receiver can connect to the internet, INDOT can deliver the data you need. With this service offered by INDOT using Leica's GNSS Technologies you don't need to invest in an extra base station to get accurate positions. You don't need to setup a base station first, worry about its safety. Just start your GNSS rover and connect. A few seconds later you can survey with cm-accuracy
Currently the InCORS is providing Network RTK in RTCM (Real Time Correction Message) 2.3, and 3.1 in the MAX (R2K2 Full) and i-MAX (R2K2 LITE) formats via NTRIP (Networked Transport of RTCM via Internet) and TCP/IP, as well as CMR and CMR+ in the MAX (R2K2 Full) and i-MAX (R2K2 LITE) formats via NTRIP , and TCP/IP. The main difference between MAX and i-MAX is the processing is done at the ROVER for MAX and with i-MAX the processing is done at the servers.
In order to access these messages the user will need a wireless modem device that can access the wireless web. The modems come in all shapes and styles and through different wireless providers. INDOT does not recommend one provider over the other, the user must determine the coverage in his/her particular area to determine the best solution.
The users also need to complete the RTK users agreement which is available as a link on the INCORS website. Once the RTK users agreement is signed and returned to INDOT, INDOT will provide the IP address, port number, account username, and account password of the system to the user.
RINEX data in the form of navigation, observation and glonass files are available for each of our sites. The data may be browsed via our FTP site found at: ftp://ftp.incors.in.gov. Files are available for two months from the current date.
Providing a real-time kinematic (RTK) correction service over the internet, and RINEX files for post-processing . End-users don’t have to be a Leica user to enjoy the benefits of INDOT's GNSS. If your GPS or GNSS receiver can connect to the internet, INDOT can deliver the data you need. With this service offered by INDOT using Leica's GNSS Technologies you don't need to invest in an extra base station to get accurate positions. You don't need to setup a base station first, worry about its safety. Just start your GNSS rover and connect. A few seconds later you can survey with cm-accuracy
Currently the InCORS is providing Network RTK in RTCM (Real Time Correction Message) 2.3, and 3.1 in the MAX (R2K2 Full) and i-MAX (R2K2 LITE) formats via NTRIP (Networked Transport of RTCM via Internet) and TCP/IP, as well as CMR and CMR+ in the MAX (R2K2 Full) and i-MAX (R2K2 LITE) formats via NTRIP , and TCP/IP. The main difference between MAX and i-MAX is the processing is done at the ROVER for MAX and with i-MAX the processing is done at the servers.
In order to access these messages the user will need a wireless modem device that can access the wireless web. The modems come in all shapes and styles and through different wireless providers. INDOT does not recommend one provider over the other, the user must determine the coverage in his/her particular area to determine the best solution.
The users also need to complete the RTK users agreement which is available as a link on the INCORS website. Once the RTK users agreement is signed and returned to INDOT, INDOT will provide the IP address, port number, account username, and account password of the system to the user.
For more information go to http://incors.in.gov/