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:
Jun. 24, 2003
Filed:
Dec. 20, 2000
Michael K. Scruggs, Pompton Plains, NJ (US);
Peter A. Wall, Bayonne, NJ (US);
Ming-Hsing Yu, Wayne, NJ (US);
Robert A. Kovacs, West Orange, NJ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A signal conditioning circuit reduces an interferrometric fiber optic gyro (IFOG) noise, the IFOG including a light source, Integrated Optics Chips (IOC) and a coupler to output an optical power signal corresponding to a rotation-induced phase shift in a fiber coil of the IFOG. The signal conditioning circuit includes a photodiode that converts the optical power signal to a corresponding electrical compensation signal and one or more switched integrators that receive and process the electrical compensation signal by selectively switching between a plurality of modes of each one of the one or more switched integrators. A method of signal conditioning in the IFOG to reduce IFOG noise includes the steps of converting the optical power signal to a corresponding electrical compensation signal and selectively integrating a current of the electrical compensation signal using at least one switched integrator.