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:
Dec. 05, 1989
Filed:
Jan. 22, 1988
Roland Blanpain, St Laurent du Pont, FR;
Patrick Le Masson, Villard de Lans, FR;
Jean-Charles Vidal, Meylan, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
Magnetic process for determining the trajectory of a moving vehicle for finding a fixed or moving magnetic object and apparatus for performing the process. The apparatus comprises magnetometers for measuring at least p independent components of the gradient of the local magnetic field, in which p is an integer equal to the number of dimensions of the space in which the moving vehicle is displaced, a circuit for storing a scalar criterion which is a function of at least one of the components of the measured gradient, a circuit for calculating the direction (.theta., .psi.) maximizing the criterion as a function of the measured gradient and a display, for use in guiding the vehicle.