Point cloud azimuth calibration system and method for underground space scanning

• Main Authors: WANG XUYANG, CHAI BEI, ZHAN DENGFENG, MA YICHANG, LI YI
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

The invention provides a point cloud azimuth calibration system and method for underground space scanning. The point cloud azimuth calibration system comprises a scanner and two targets disposed in anunderground space, two antennas and positioning devices disposed in an aboveground space, and a calibration device, wherein the two targets and the two antennas are in a same vertical plane and a connecting line between the two targets is parallel to the connecting line between the two antennas; the calibration device is used to acquire a set of point clouds sent by the scanner, antenna coordinates sent by the positioning devices, a vertical height between preset antennas and the targets, and a length between the two preset targets, obtain antenna azimuthal angles according to the antenna coordinates, and obtain calibration coordinates of the targets according to the antenna coordinates, the vertical height between the antennas and the targets, and the antenna azimuthal angles; and the calibration device is furth