First Stage of State Mapping Project Completed

摘要

Topocart has completed the first stage of a project involving more than 35,000 aerial photographs covering an area greater than 250,000 square kilometres in the State of Saeo Paulo (Brazil). In addition to the State area, a 2.5km-wide patch beyond the State boundary was also covered. In order to guarantee the final accuracy, more than 1,500 points on field and more than 500 points of quality checking were traced. For the altitude compensation, an elaborate, specific geoid model was created, including almost 2,000 gravimetric points in the existing State territory.