公开(公告)号：US20170363421A1

公开(公告)日：2017-12-21

申请号：US15620939

申请日：2017-06-13

Applicant: TOPCON Corporation

Inventor： Kaoru Kumagai ,  Jun-ichi Kodaira

IPC: G01C15/00 ,  G01S17/08 ,  G01S17/87 ,  G01S17/89

CPC classification number: G01C15/002 ,  G01C1/02 ,  G01C1/04 ,  G01C3/08 ,  G01S17/08 ,  G01S17/87 ,  G01S17/89

Abstract: A surveying system comprises a total station unit, a laser scanner unit and an arithmetic control unit. The total station unit comprises a frame unit, a telescope unit, a total station distance measuring unit accommodated in the telescope unit and a total station arithmetic control unit, wherein the laser scanner unit is provided on the frame unit and acquires point cloud data by rotatably irradiating a laser beam in a vertical direction, and wherein the arithmetic control unit acquires the point cloud data by a cooperation of a horizontal rotation of the frame unit and a rotary irradiation of the laser beam, compares a distance measurement result of the total station unit with a distance measurement result of the laser scanner unit and corrects the point cloud data based on a comparison result.