| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable accurate information of a laser reference plane to be given at any time without interrupting any operation, by compensating a time-lapse error of the laser reference plane in real time. <P>SOLUTION: A surveying system is provided, which includes: a rotary laser irradiation device 1 installed at a known point and used for rotary inadiation with two or more fanlike laser beams 3 with at least one tilted and for forming the laser reference plane; a light receiving device 4, which is mounted on a mobile support member 9, for receiving the laser beam and for calculating an elevation angle at a light receiving position; and a monitor light receiving device 11 installed at a known position within the laser reference plane. The monitor light receiving device includes: a monitor light receiving sensor for sensing the laser beam; a storage unit for storing a reference value of the laser reference plane; an arithmetic control unit for calculating time-lapse positional changes in the laser reference plane on the basis of the results of light reception by the monitor light receiving sensor and on the reference value; and a transmitting unit for transmitting the time-lapse positional changes to the light receiving device and/or to the rotary laser irradiation device as compensation information. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
