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Each CORS station will include a Leica GRX1200 GG Pro GNSS receiver with Ethernet and frequency import capabilities. INDOT plans to space primary stations about 100 km apart, and then densify the network as needed with secondary stations. Once the network is implemented, DGPS and real-time kinematic (RTK) data will be available to the agency 24/7 via the Internet.
In addition, INDOT will implement the Leica Geosystems’ Spider Network software, an integrated suite of software that adjusts for the ionic and tropospheric conditions of the entire network before sending a corrected signal to the rover or end user from a single reference station. The result is rather than merely getting information from the closest reference station, the surveyor is getting corrections based on the entire network.
Bill Schmidt, manager of Aerial Engineering with the INDOT, says, “Our survey community is very excited about the CORS network and its ability to minimize the need to set up base stations and create greater opportunity for RTK surveying. An added plus, is that every state agency will be able to operate on the same coordinate system.”
INDOT expects the primary network of the GNSS network to become operational by early 2008, with the secondary network following soon after. This network is a critical element in INDOT’s efforts to effectively manage its 11,300 centerline miles and 28,500 total lane miles.
Gerard Manley, vice president of Engineered Solutions for Leica Geosystems, says, “Reference station networks like INDOT provides a fundamental tool for engineering and survey professionals throughout the state, both public and private, for the purpose of advanced measuring accuracy and processing speed. These reference stations also have widespread application beyond advanced traditional survey techniques such as helping monitor the movement of bridges and dams, supporting machine control activities on road construction projects, playing a role in accident reporting of local police departments, and so much more. It’s truly an investment in the future.”
Leica Geosystems – when it has to be right
With close to 200 years of pioneering solutions to measure the world, Leica Geosystems products and services are trusted by professionals worldwide to help them capture, analyze, and present spatial information. Leica Geosystems is best known for its broad array of products that capture accurately, model quickly, analyze easily, and visualize and present spatial information. Those who use Leica products every day trust them for their dependability, the value they deliver, and the superior customer support. Based in Heerbrugg, Switzerland, Leica Geosystems is a global company with tens of thousands of customers supported by more than 2,400 employees in 22 countries and hundreds of partners located in more than 120 countries around the world. Leica Geosystems is part of the Hexagon Group, Sweden.
Source: July 30, 2007