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. 25, 2006
Filed:
Nov. 19, 2004
Tomoaki Ueda, Kyoto, JP;
Kazuhito Nakamura, Hyogo, JP;
Yukio Kishimoto, Hyogo, JP;
Naoya Ichimura, Kyoto, JP;
Tokugen Yasuda, Kyoto, JP;
Tomoaki Ueda, Kyoto, JP;
Kazuhito Nakamura, Hyogo, JP;
Yukio Kishimoto, Hyogo, JP;
Naoya Ichimura, Kyoto, JP;
Tokugen Yasuda, Kyoto, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The object of the present invention is to realize a low-invasive underground exploration apparatus, system, and method which are capable of specifying the kind, three-dimensional position, and amount of a substance present in the ground. The underground exploration apparatus, system, and method includes: measuring, at multiple points, a high frequency voltage that appears upon conduction of high frequency current through the ground to obtain measurement results at two or more frequency levels; employing an ground model using the finite element method, the boundary element method, an impedance network, or the like to estimate a substance in the ground by changing unknown quantities of the ground model such as local dielectric constant and electric conductivity so as to make an error between the actual measured value and the calculated value smaller; and displaying input information of the ground model and results of the estimation processing two-dimensionally or three-dimensionally.