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:
May. 28, 2002
Filed:
Oct. 12, 2000
Charles P. Bruner, Calabasas, CA (US);
Litton Systems, Inc., Woodland Hills, CA (US);
Abstract
The invention is a method and apparatus for compensating for acceleration in a GPS-inertial navigation system. A translated satellite signal is a satellite signal translated in the GPS receiver to an intermediate-frequency band by a sequence of M mixing operations, M being an integer greater than or equal to one. The m'th mixing operation consists of mixing the satellite signal with an m'th mixing signal having a frequency f where f can be approximated by a function F of one or more components A , A , and A of the acceleration and one or more parameters P , P , . . . , P that are independent of acceleration. The method consists of (a) obtaining values for one or more components of acceleration, (b) obtaining values for one or more parameters, (c)determining the value of one or more functions F , and (d) utilizing the data obtained in steps (a), (b), and (c) in compensating for the effects of acceleration in a GPS receiver.