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:
Apr. 10, 2007
Filed:
Apr. 05, 2005
Masamitsu Endo, Kanagawa, JP;
Masamitsu Endo, Kanagawa, JP;
Sokkia Co., Ltd., Kanagawa, JP;
Abstract
To obtain an accurate survey value even if a centering operation is simplified without using a specific target. When a survey point S is displayed on the screen of a displayas an image picked up by a CCD camerain a process to perform an operation for placing a surveying instrumentdirectly above the survey point S, a centering operation is ended, and the survey point S is specified as a true centering point. Accordingly, coordinates (Xs, Ys) of the survey point S in which the instrument center pointis defined as an origin are calculated as a decentering amount (i.e., dislocation) of the survey point S with respect to an instrument center pointAt this time, a horizontal angle θ'h determined when a target T is collimated on the basis of the instrument center is obtained by performing angle measurement, and a horizontal-angle correction amount Δθh is calculated on the basis of the coordinates (Xk, Yk) of the virtual centering point K and on the basis of the coordinates (Xs, Ys) of the survey point S. The horizontal angle θ′h is corrected by this horizontal-angle correction amount Δθh, and the horizontal angle θh based on the survey point S is obtained.