The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2008
Filed:
Mar. 02, 2006
Satoshi Yasutomi, Matsuda-machi, JP;
Minoru Chiba, Matsuda-machi, JP;
Nobuyuki Nishita, Matsuda-machi, JP;
Satoshi Yasutomi, Matsuda-machi, JP;
Minoru Chiba, Matsuda-machi, JP;
Nobuyuki Nishita, Matsuda-machi, JP;
Sokkia Co., Ltd., Atsugi-shi, JP;
Abstract
[Problem] In a surveying instrument that automatically tracks or collimates a target, the target that is moved to a measurement point and is placed there can be found in the shortest possible time. [Solution Means] In a survey system made up of a target () and a surveying instrument () that automatically tracks or collimates the target, the target is provided with a direction angle sensor () that measures a surveying-instrument direction angle (θta, θtb) obtained when the target is directed toward the surveying instrument, whereas the surveying instrument is provided with a horizontal angle measuring portion that measures a target direction angle (θsa, θsb, θsc) indicating the direction of the target. An estimated target direction angle (θsb) is calculated from an angular difference (θ) between the surveying-instrument direction angle (θta) and the target direction angle (θsa) obtained at the last measurement and from the surveying-instrument direction angle (θtb) obtained at the present measurement. The instrument body () is directed in the direction of the estimated target direction angle.