The Acquirement of Road Curvature Radius and Error Analysis
ISBN 978-85-88783-11-9
Authors
1Zhang, ; 2Zhang, Y.; 3Huang, L.
1XI'AN INSTITUTE OF SURVEYING AND MAPPING Email: zhangde_chyjs@gmail.com
2XI'AN INSTITUTE OF SURVEYING AND MAPPING
3XI'AN INSTITUTE OF SURVEYING AND MAPPING Email: zhangde_chyjs@gmail.com
Abstract
The trafficability analysis of terrain is very important in terrain analysis. Road is the main way of transportation. Its curvature radius (or degree of curve) decides whether the vehicle can track through it. The curvature radius has a direct effect on the vehicle’s maneuver and the trafficability of road. So the acquirement of road curvature radius is an important part in the terrain analysis. Utilizing the coordinate data in the map database, this paper acquires the road curvature radius by polynomial fitting and least squares method, and analyzes the error of the curvature radius. The result shows that this method is practicable and effective.
Keywords
terrain analysis; curvature radius; error analysis