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:
Aug. 24, 1976
Filed:
Apr. 16, 1973
Daniel P Hearn, Richardson, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A method and apparatus for recording the position of a sensor to reduce turbulence errors in airborne magnetic surveying includes, in one embodiment a camera mounted on a gyrostabilized platform to maintain it at a constant downward orientation from a bird towed from an airplane. The bird, in addition to the platform and camera, carries a magnetometer sensor which measures the magnetic field at the bird at a predetermined rate. The camera is actuated at the times the magnetic field is measured, whereby the position of the magnetometer can be precisely located for each measurement taken. In another embodiment, two birds towed from an airplane each carries a magnetometer sensor. The two birds are towed at different altitudes, one above the other, and a camera is carried by the bird at the higher altitude to photograph the bird at the lower altitude and the earth to precisely record the relative locations of the birds with respect to each other and the earth when the magnetic measurements are made. A barometer transducer is carried by at least one of the birds to precisely measure the height of the birds with respect to each other and the earth.