Patent ID: 7701566
Filing Date: 2010-04-20
Classification: E02F,G01C,G01S

Abstract:
1. A surveying system, comprising a surveying instrument which measures a distance and an angle by projecting a distance measuring light toward a target and capable to measure a three-dimensional position data of said target and has a function to track said target, and a movable side control device provided on said target side, wherein said surveying instrument has a first communication means capable to transmit the three-dimensional position data of said target measured by said surveying instrument to said movable side control device and a first control arithmetic unit for controlling the search of said target by said surveying instrument, wherein said movable side control device has a displacement amount detecting means of said target and a second control arithmetic unit for calculating the displacement amount of said target based on a target detection signal from said displacement amount detecting means and for calculating a target position based on said displacement amount of said target and based on said three-dimensional position data, and a second communicating means, and wherein in case said surveying instrument cannot track said target, said target position transmitted from said movable side control device is acquired, and said first control arithmetic unit starts searching of said target with said target position as a starting point.