Appratus and method for judgment 3 dimension

• Main Author: KIM BUM JO
• Format: Patent
• Language: Chinese; English
• Published: 25.09.2013
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention discloses a 3-D positioning apparatus and a method. The 3-D positioning apparatus comprises the components as following: an electric map storage portion, which stores 2-D position information and height information with multiple interpolating points; a map matching portion, which chooses at least one alternate path; a height detection portion, which calculates vehicle heights relative to multiple interpolating points; an error correction portion, which calculates the height of at least one alternate path; and a 3-D matching portion, which determines whether the vehicle height difference is less than a critical error, and the alternate path is chosen from the at least one alternate path with error less than the critical error for map match to the present position. The map matching precision on viaducts, underground roads, car parks and other roads having height difference with a flat road, the road is more accurately introduced, and much convenience is provided for a driver.