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:
Mar. 25, 2003
Filed:
Feb. 08, 2000
Daniel A. Tazartes, West Hills, CA (US);
John G. Mark, Pasadena, CA (US);
Brian T. Lottman, Moorpark, CA (US);
Shaw W. Fann, Woodland Hills, CA (US);
Litton Systems, Inc., Woodland Hills, CA (US);
Abstract
The invention is a method and apparatus for processing signals with frequencies f and f from a multioscillator ring laser gyro, the method being repeated at regular time intervals. The difference f , of f and f is a measure of the angular rotation rate of the ring laser gyro and the sum f of f and f divided by 2 is the Faraday bias frequency. The first step of the method comprises determining two or more of the values M , M , M , and M of a set of functions M (f ), M (f ), M (f ), and M (f ). The second step comprises storing two or more processed values M , M , M , and M of the functions M (f ), M (f ), M (f ), and M (f ) if the corresponding values of M , M , M , and M are valid. A processed value is derived from the value for the present time interval and zero or more processed values for prior time intervals. The third step comprises determining f or a function thereof from zero or more valid function values obtained as a result of executing the first step during the current time interval, zero or more processed values obtained as a result of executing the second step during a prior time interval, and zero or more extrapolated values obtained by extrapolating the processed values obtained as a result of executing the second step during a prior time interval to the present time interval.