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Topcon’s Millimeter GPS
March 7, 2008

Topcon Positioning Systems’ Millimeter GPS precise positioning technology includes asphalt pavers as well as 3D-GPS + control system for pavers, profilers and trimmers.The Topcon Millimeter GPS system allows contractors to use one GPS system for finish grading, trimming, profiling, and paving airport, highway and parking lot projects. Topcon’s technology provides a significant enhancement in the vertical measuring precision of RTK GPS. The technology, known as Laser Zone, is used by hundreds of companies worlwide to generate a vertical accuracy to within a few millimeters as compared to the centimeter vertical accuracy of conventional RTK GPS. Utilized on asphalt pavers, the Millimeter GPS technology incorporates a unique zone- beam laser transmitter, the PZL-1, that sweeps a 2,000 foot diameter (600m) area with a 33-foot (10 m) high wall of laser light. A compact sensor, the PZS-MC, is mounted on a mast which is attached to the toe arm of the paver.