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:
Sep. 18, 2012
Filed:
Nov. 16, 2011
Wallace E. Vander Velde, Winchester, MA (US);
John H. Cafarella, Swampscott, MA (US);
Huan-wan Tseng, Westford, MA (US);
George Dimos, Lexington, MA (US);
Triveni N. Upadhyay, Concord, MA (US);
Jianhui Luo, Westborough, MA (US);
Wallace E. Vander Velde, Winchester, MA (US);
John H. Cafarella, Swampscott, MA (US);
Huan-Wan Tseng, Westford, MA (US);
George Dimos, Lexington, MA (US);
Triveni N. Upadhyay, Concord, MA (US);
Jianhui Luo, Westborough, MA (US);
Mayflower Communications Company, Inc., Burlington, MA (US);
Abstract
A system and method for determining the roll rate and roll angle of a spinning platform by using the measured phase and/or amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence as well as in the absence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.